diff --git a/app/controllers/instructeurs/archives_controller.rb b/app/controllers/instructeurs/archives_controller.rb
new file mode 100644
index 000000000..2917520be
--- /dev/null
+++ b/app/controllers/instructeurs/archives_controller.rb
@@ -0,0 +1,55 @@
+module Instructeurs
+  class ArchivesController < InstructeurController
+    before_action :ensure_procedure_enabled
+
+    def index
+      @procedure = procedure
+
+      @archivable_months = archivable_months
+      @dossiers_termines = @procedure.dossiers.state_termine
+      @poids_total = ProcedureArchiveService.procedure_files_size(@procedure)
+      groupe_instructeur = current_instructeur.groupe_instructeurs.where(procedure: @procedure.id).first
+      @archives = Archive.for_groupe_instructeur(groupe_instructeur)
+    end
+
+    def create
+      type = params[:type]
+      month = Date.strptime(params[:month], '%Y-%m') if params[:month].present?
+
+      archive = ProcedureArchiveService.new(procedure).create_pending_archive(current_instructeur, type, month)
+      if archive.pending?
+        ArchiveCreationJob.perform_later(procedure, archive, current_instructeur)
+        flash[:notice] = "Votre demande a été prise en compte. Selon le nombre de dossiers, cela peut prendre quelques minutes. Vous recevrez un courriel lorsque le fichier sera disponible."
+      else
+        flash[:notice] = "Cette archive a déjà été générée."
+      end
+      redirect_to instructeur_archives_path(procedure)
+    end
+
+    private
+
+    def ensure_procedure_enabled
+      if !procedure.feature_enabled?(:archive_zip_globale) || procedure.brouillon?
+        flash[:alert] = "L'accès aux archives n'est pas disponible pour cette démarche, merci d'en faire la demande à l'équipe de démarches simplifiees"
+        return redirect_to instructeur_procedure_path(procedure)
+      end
+    end
+
+    def archivable_months
+      start_date = procedure.published_at.to_date
+      end_date = Time.zone.now.to_date
+
+      (start_date...end_date)
+        .map(&:beginning_of_month)
+        .uniq
+        .reverse
+    end
+
+    def procedure
+      current_instructeur
+        .procedures
+        .for_download
+        .find(params[:procedure_id])
+    end
+  end
+end
diff --git a/app/controllers/instructeurs/dossiers_controller.rb b/app/controllers/instructeurs/dossiers_controller.rb
index 37b7e1d4c..e6fb16d21 100644
--- a/app/controllers/instructeurs/dossiers_controller.rb
+++ b/app/controllers/instructeurs/dossiers_controller.rb
@@ -213,7 +213,6 @@ module Instructeurs
     def telecharger_pjs
       return head(:forbidden) if !dossier.attachments_downloadable?
 
-      generate_pdf_for_instructeur_export
       files = ActiveStorage::DownloadableFile.create_list_from_dossier(dossier)
 
       zipline(files, "dossier-#{dossier.id}.zip")
@@ -239,12 +238,6 @@ module Instructeurs
         .find(params[:dossier_id])
     end
 
-    def generate_pdf_for_instructeur_export
-      @include_infos_administration = true
-      pdf = render_to_string(template: 'dossiers/show', formats: [:pdf])
-      dossier.pdf_export_for_instructeur.attach(io: StringIO.open(pdf), filename: "export-#{dossier.id}.pdf", content_type: 'application/pdf')
-    end
-
     def commentaire_params
       params.require(:commentaire).permit(:body, :piece_jointe)
     end
diff --git a/app/helpers/archive_helper.rb b/app/helpers/archive_helper.rb
new file mode 100644
index 000000000..b349b8793
--- /dev/null
+++ b/app/helpers/archive_helper.rb
@@ -0,0 +1,5 @@
+module ArchiveHelper
+  def can_generate_archive?(dossiers_termines, poids_total)
+    dossiers_termines.count < 100 && poids_total < 1.gigabyte
+  end
+end
diff --git a/app/jobs/archive_creation_job.rb b/app/jobs/archive_creation_job.rb
new file mode 100644
index 000000000..255af07db
--- /dev/null
+++ b/app/jobs/archive_creation_job.rb
@@ -0,0 +1,7 @@
+class ArchiveCreationJob < ApplicationJob
+  def perform(procedure, archive, instructeur)
+    ProcedureArchiveService
+      .new(procedure)
+      .collect_files_archive(archive, instructeur)
+  end
+end
diff --git a/app/jobs/cron/purge_stale_archives_job.rb b/app/jobs/cron/purge_stale_archives_job.rb
new file mode 100644
index 000000000..4ce48784a
--- /dev/null
+++ b/app/jobs/cron/purge_stale_archives_job.rb
@@ -0,0 +1,7 @@
+class Cron::PurgeStaleArchivesJob < Cron::CronJob
+  self.schedule_expression = "every 5 minutes"
+
+  def perform
+    Archive.stale.destroy_all
+  end
+end
diff --git a/app/lib/active_storage/downloadable_file.rb b/app/lib/active_storage/downloadable_file.rb
index db86efc73..d8ca5cf4c 100644
--- a/app/lib/active_storage/downloadable_file.rb
+++ b/app/lib/active_storage/downloadable_file.rb
@@ -1,14 +1,12 @@
 class ActiveStorage::DownloadableFile
   def self.create_list_from_dossier(dossier)
     pjs = PiecesJustificativesService.liste_pieces_justificatives(dossier)
-    files = pjs.map do |piece_justificative|
+    pjs.map do |piece_justificative|
       [
         piece_justificative,
-        self.timestamped_filename(piece_justificative)
+        "dossier-#{dossier.id}/#{self.timestamped_filename(piece_justificative)}"
       ]
     end
-    files << [dossier.pdf_export_for_instructeur, self.timestamped_filename(dossier.pdf_export_for_instructeur)]
-    files
   end
 
   private
@@ -22,19 +20,23 @@ class ActiveStorage::DownloadableFile
     timestamp = attachment.created_at.strftime("%d-%m-%Y-%H-%M")
     id = attachment.id % 10000
 
-    "#{folder}/#{basename}-#{timestamp}-#{id}#{extension}"
+    [folder, "#{basename}-#{timestamp}-#{id}#{extension}"].join
   end
 
   def self.folder(attachment)
+    if attachment.name == 'pdf_export_for_instructeur'
+      return ''
+    end
+
     case attachment.record_type
     when 'Dossier'
-      'dossier'
+      'dossier/'
     when 'DossierOperationLog', 'BillSignature'
-      'horodatage'
+      'horodatage/'
     when 'Commentaire'
-      'messagerie'
+      'messagerie/'
     else
-      'pieces_justificatives'
+      'pieces_justificatives/'
     end
   end
 
diff --git a/app/mailers/instructeur_mailer.rb b/app/mailers/instructeur_mailer.rb
index 89c58864c..55332cf38 100644
--- a/app/mailers/instructeur_mailer.rb
+++ b/app/mailers/instructeur_mailer.rb
@@ -1,5 +1,7 @@
 # Preview all emails at http://localhost:3000/rails/mailers/instructeur_mailer
 class InstructeurMailer < ApplicationMailer
+  helper MailerHelper
+
   layout 'mailers/layout'
 
   def user_to_instructeur(email)
@@ -42,4 +44,12 @@ class InstructeurMailer < ApplicationMailer
 
     mail(to: instructeur.email, subject: subject)
   end
+
+  def send_archive(instructeur, procedure, archive)
+    @archive = archive
+    @procedure = procedure
+    subject = "Votre archive est disponible"
+
+    mail(to: instructeur.email, subject: subject)
+  end
 end
diff --git a/app/models/archive.rb b/app/models/archive.rb
new file mode 100644
index 000000000..7ee93720f
--- /dev/null
+++ b/app/models/archive.rb
@@ -0,0 +1,71 @@
+# == Schema Information
+#
+# Table name: archives
+#
+#  id             :bigint           not null, primary key
+#  key            :text             not null
+#  month          :date
+#  status         :string           not null
+#  time_span_type :string           not null
+#  created_at     :datetime         not null
+#  updated_at     :datetime         not null
+#
+class Archive < ApplicationRecord
+  include AASM
+
+  RETENTION_DURATION = 1.week
+
+  has_and_belongs_to_many :groupe_instructeurs
+
+  has_one_attached :file
+
+  scope :stale, -> { where('updated_at < ?', (Time.zone.now - RETENTION_DURATION)) }
+  scope :for_groupe_instructeur, -> (groupe_instructeur) {
+    joins(:archives_groupe_instructeurs)
+      .where(
+        archives_groupe_instructeurs: { groupe_instructeur: groupe_instructeur }
+      )
+  }
+
+  enum time_span_type: {
+    everything: 'everything',
+    monthly:    'monthly'
+  }
+
+  enum status: {
+    pending: 'pending',
+    generated: 'generated'
+  }
+
+  aasm whiny_persistence: true, column: :status, enum: true do
+    state :pending, initial: true
+    state :generated
+
+    event :make_available do
+      transitions from: :pending, to: :generated
+    end
+  end
+
+  def available?
+    status == 'generated' && file.attached?
+  end
+
+  def filename(procedure)
+    if time_span_type == 'everything'
+      "procedure-#{procedure.id}.zip"
+    else
+      "procedure-#{procedure.id}-mois-#{I18n.l(month, format: '%Y-%m')}.zip"
+    end
+  end
+
+  def self.find_or_create_archive(time_span_type, month, groupe_instructeurs)
+    create_with(groupe_instructeurs: groupe_instructeurs)
+      .create_or_find_by(time_span_type: time_span_type, month: month, key: generate_cache_key(groupe_instructeurs))
+  end
+
+  private
+
+  def self.generate_cache_key(groupe_instructeurs)
+    groupe_instructeurs.map(&:id).sort.join('-')
+  end
+end
diff --git a/app/models/dossier.rb b/app/models/dossier.rb
index a0add0355..8b8a1e60e 100644
--- a/app/models/dossier.rb
+++ b/app/models/dossier.rb
@@ -172,7 +172,12 @@ class Dossier < ApplicationRecord
   scope :en_construction,             -> { not_archived.state_en_construction }
   scope :en_instruction,              -> { not_archived.state_en_instruction }
   scope :termine,                     -> { not_archived.state_termine }
-  scope :downloadable_sorted,         -> {
+  scope :processed_in_month, -> (month) do
+    state_termine
+      .joins(:traitements)
+      .where(traitements: { processed_at: month.beginning_of_month..month.end_of_month })
+  end
+  scope :downloadable_sorted, -> {
     state_not_brouillon
       .includes(
         :user,
diff --git a/app/models/instructeur.rb b/app/models/instructeur.rb
index f43eda8fb..d3e2fc21b 100644
--- a/app/models/instructeur.rb
+++ b/app/models/instructeur.rb
@@ -25,6 +25,7 @@ class Instructeur < ApplicationRecord
   has_many :followed_dossiers, through: :follows, source: :dossier
   has_many :previously_followed_dossiers, -> { distinct }, through: :previous_follows, source: :dossier
   has_many :trusted_device_tokens, dependent: :destroy
+  has_many :archives
 
   has_one :user, dependent: :nullify
 
diff --git a/app/models/procedure.rb b/app/models/procedure.rb
index ea0b4e570..b4760c353 100644
--- a/app/models/procedure.rb
+++ b/app/models/procedure.rb
@@ -156,6 +156,20 @@ class Procedure < ApplicationRecord
     includes(:draft_revision, :published_revision, administrateurs: :user)
   }
 
+  scope :for_download, -> {
+    includes(
+      :groupe_instructeurs,
+      dossiers: {
+        champs: [
+          piece_justificative_file_attachment: :blob,
+          champs: [
+            piece_justificative_file_attachment: :blob
+          ]
+        ]
+      }
+    )
+  }
+
   validates :libelle, presence: true, allow_blank: false, allow_nil: false
   validates :description, presence: true, allow_blank: false, allow_nil: false
   validates :administrateurs, presence: true
diff --git a/app/services/pieces_justificatives_service.rb b/app/services/pieces_justificatives_service.rb
index a5903531b..f3cd8303c 100644
--- a/app/services/pieces_justificatives_service.rb
+++ b/app/services/pieces_justificatives_service.rb
@@ -1,10 +1,11 @@
 class PiecesJustificativesService
   def self.liste_pieces_justificatives(dossier)
+    dossier_export = generate_dossier_export(dossier)
     pjs_champs = pjs_for_champs(dossier)
     pjs_commentaires = pjs_for_commentaires(dossier)
     pjs_dossier = pjs_for_dossier(dossier)
 
-    (pjs_champs + pjs_commentaires + pjs_dossier)
+    ([dossier_export] + pjs_champs + pjs_commentaires + pjs_dossier)
       .filter(&:attached?)
   end
 
@@ -43,6 +44,17 @@ class PiecesJustificativesService
 
   private
 
+  def self.generate_dossier_export(dossier)
+    pdf = ApplicationController
+      .render(template: 'dossiers/show', formats: [:pdf],
+              assigns: {
+                include_infos_administration: true,
+                dossier: dossier
+              })
+    dossier.pdf_export_for_instructeur.attach(io: StringIO.open(pdf), filename: "export-#{dossier.id}.pdf", content_type: 'application/pdf')
+    dossier.pdf_export_for_instructeur
+  end
+
   def self.pjs_for_champs(dossier)
     allowed_champs = dossier.champs + dossier.champs_private
 
diff --git a/app/services/procedure_archive_service.rb b/app/services/procedure_archive_service.rb
new file mode 100644
index 000000000..b26757210
--- /dev/null
+++ b/app/services/procedure_archive_service.rb
@@ -0,0 +1,72 @@
+require 'tempfile'
+
+class ProcedureArchiveService
+  def initialize(procedure)
+    @procedure = procedure
+  end
+
+  def create_pending_archive(instructeur, type, month = nil)
+    groupe_instructeurs = instructeur
+      .groupe_instructeurs
+      .where(procedure: @procedure)
+
+    Archive.find_or_create_archive(type, month, groupe_instructeurs)
+  end
+
+  def collect_files_archive(archive, instructeur)
+    if archive.time_span_type == 'everything'
+      dossiers = @procedure.dossiers.state_termine
+    else
+      dossiers = @procedure.dossiers.processed_in_month(archive.month)
+    end
+
+    files = create_list_of_attachments(dossiers)
+
+    tmp_file = Tempfile.new(['tc', '.zip'])
+
+    Zip::OutputStream.open(tmp_file) do |zipfile|
+      files.each do |attachment, pj_filename|
+        zipfile.put_next_entry(pj_filename)
+        zipfile.puts(attachment.download)
+      end
+    end
+
+    archive.file.attach(io: File.open(tmp_file), filename: archive.filename(@procedure))
+    tmp_file.delete
+    archive.make_available!
+    InstructeurMailer.send_archive(instructeur, @procedure, archive).deliver_later
+  end
+
+  def self.procedure_files_size(procedure)
+    dossiers_files_size(procedure.dossiers)
+  end
+
+  def self.dossiers_files_size(dossiers)
+    dossiers.map do |dossier|
+      liste_pieces_justificatives_for_archive(dossier).sum(&:byte_size)
+    end.sum
+  end
+
+  private
+
+  def create_list_of_attachments(dossiers)
+    dossiers.flat_map do |dossier|
+      ActiveStorage::DownloadableFile.create_list_from_dossier(dossier)
+    end
+  end
+
+  def self.attachments_from_champs_piece_justificative(champs)
+    champs
+      .filter { |c| c.type_champ == TypeDeChamp.type_champs.fetch(:piece_justificative) }
+      .filter { |pj| pj.piece_justificative_file.attached? }
+      .map(&:piece_justificative_file)
+  end
+
+  def self.liste_pieces_justificatives_for_archive(dossier)
+    champs_blocs_repetables = dossier.champs
+      .filter { |c| c.type_champ == TypeDeChamp.type_champs.fetch(:repetition) }
+      .flat_map(&:champs)
+
+    attachments_from_champs_piece_justificative(champs_blocs_repetables + dossier.champs)
+  end
+end
diff --git a/app/views/instructeur_mailer/send_archive.html.haml b/app/views/instructeur_mailer/send_archive.html.haml
new file mode 100644
index 000000000..11857c69f
--- /dev/null
+++ b/app/views/instructeur_mailer/send_archive.html.haml
@@ -0,0 +1,21 @@
+- content_for(:title, 'Votre archive est disponible')
+
+%p
+  Bonjour,
+
+%p
+  Votre archive pour la démarche
+  = link_to("#{@procedure.id} − #{@procedure.libelle}", instructeur_procedure_url(@procedure.id))
+  est disponible.
+  Vous pouvez la télécharger dans votre espace de gestion des archives.
+
+%p
+  = round_button('Consulter mes archives', instructeur_archives_url(@procedure), :primary)
+
+%p
+  Ce fichier est
+  %b valide une semaine
+  et peut-être téléchargé
+  %b plusieurs fois.
+
+= render partial: "layouts/mailers/signature"
diff --git a/app/views/instructeurs/archives/create.js.haml b/app/views/instructeurs/archives/create.js.haml
new file mode 100644
index 000000000..7fe9f7f0b
--- /dev/null
+++ b/app/views/instructeurs/archives/create.js.haml
@@ -0,0 +1 @@
+= render_flash(sticky: true)
diff --git a/app/views/instructeurs/archives/index.html.haml b/app/views/instructeurs/archives/index.html.haml
new file mode 100644
index 000000000..82ec92f1d
--- /dev/null
+++ b/app/views/instructeurs/archives/index.html.haml
@@ -0,0 +1,91 @@
+- content_for(:title, "Archives pour #{@procedure.libelle}")
+
+= render partial: 'new_administrateur/breadcrumbs',
+  locals: { steps: [link_to(@procedure.libelle, instructeur_procedure_path(@procedure)),
+                    'Archives'] }
+
+.container
+  %h1 Archives
+
+  .card.featured
+    .card-title Gestion de vos archives
+    %p
+      Vous pouvez télécharger les archives des dossiers terminés depuis la publication de la procédure au format Zip.
+
+    %p
+      Cet export contient les demande déposée par l'usager et la liste des pièces justificatives transmises.
+
+    %p
+      Cet export n'est pas possible pour le moment pour les démarches à forte volumétrie.
+      Nous vous invitons à regarder
+      = link_to 'la documentation', ARCHIVAGE_DOC_URL
+      afin de voir les options à votre disposition pour mettre en place un système d'archive.
+
+  %table.table.hoverable
+    %thead
+      %tr
+        %th &nbsp;
+        %th Nombre de dossiers terminés
+        %th Poids estimé
+        %th Télécharger
+
+    %tbody
+    - if can_generate_archive?(@dossiers_termines, @poids_total)
+      %tr
+        - matching_archive = @archives.find_by(time_span_type: 'everything')
+        %td
+          Tous les dossiers
+        %td
+          = @dossiers_termines.count
+        %td
+          - if matching_archive.present? && matching_archive.available?
+            - weight = matching_archive.file.byte_size
+          - else
+            - weight = @poids_total
+          = number_to_human_size(weight)
+        %td
+          - if matching_archive.try(&:available?)
+            = link_to url_for(matching_archive.file), class: 'button primary' do
+              %span.icon.download-white
+              = t(:archive_ready_html, generated_period: time_ago_in_words(matching_archive.updated_at), scope: [:instructeurs, :procedure])
+          - elsif matching_archive.try(&:pending?)
+            %span.icon.retry
+            = t(:archive_pending_html, created_period: time_ago_in_words(matching_archive.created_at), scope: [:instructeurs, :procedure])
+          - elsif @dossiers_termines.count > 0
+            = link_to instructeur_archives_path(@procedure, type: 'everything'), method: :post, class: "button" do
+              %span.icon.new-folder
+              Demander la création
+          - else
+            Rien à télécharger !
+    - @archivable_months.each do |month|
+      - dossiers_termines = @procedure.dossiers.processed_in_month(month)
+      - nb_dossiers_termines = dossiers_termines.count
+      - matching_archive = @archives.find_by(time_span_type: 'monthly', month: month)
+      %tr
+        %td
+          = I18n.l(month, format: "%B %Y")
+        %td
+          = nb_dossiers_termines
+        %td
+          - if matching_archive.present? && matching_archive.available?
+            - weight = matching_archive.file.byte_size
+          - else
+            - weight = ProcedureArchiveService::dossiers_files_size(dossiers_termines)
+          = number_to_human_size(weight)
+        %td
+          - if nb_dossiers_termines > 0
+            - if matching_archive.present?
+              - if matching_archive.status == 'generated' && matching_archive.file.attached?
+                = link_to url_for(matching_archive.file), class: 'button primary' do
+                  %span.icon.download-white
+                  = t(:archive_ready_html, generated_period: time_ago_in_words(matching_archive.updated_at), scope: [:instructeurs, :procedure])
+              - else
+                %span.icon.retry
+                = t(:archive_pending_html, created_period: time_ago_in_words(matching_archive.created_at), scope: [:instructeurs, :procedure])
+            - else
+              = link_to instructeur_archives_path(@procedure, type:'monthly', month: month.strftime('%Y-%m')), method: :post, class: "button" do
+                %span.icon.new-folder
+                Démander la création
+          - else
+            Rien à télécharger !
+
diff --git a/app/views/instructeurs/procedures/_download_dossiers.html.haml b/app/views/instructeurs/procedures/_download_dossiers.html.haml
index a465eb9c9..b3be64c10 100644
--- a/app/views/instructeurs/procedures/_download_dossiers.html.haml
+++ b/app/views/instructeurs/procedures/_download_dossiers.html.haml
@@ -16,3 +16,6 @@
             - else
               %span{ 'data-export-poll-url': download_export_instructeur_procedure_path(procedure, export_format: format, no_progress_notification: true) }
                 = t(:export_pending_html, export_time: time_ago_in_words(export.created_at), export_format: ".#{format}", scope: [:instructeurs, :procedure])
+        - if procedure.feature_enabled?(:archive_zip_globale)
+          %li
+            = link_to t(:download_archive, scope: [:instructeurs, :procedure]), instructeur_archives_path(procedure)
diff --git a/config/locales/views/instructeurs/fr.yml b/config/locales/views/instructeurs/fr.yml
index 3cc5fabdc..ef2b1987b 100644
--- a/config/locales/views/instructeurs/fr.yml
+++ b/config/locales/views/instructeurs/fr.yml
@@ -8,3 +8,6 @@ fr:
         ods_html: Demander un export au format .ods
       export_ready_html: Télécharger l’export au format %{export_format}<br>(généré il y a %{export_time})
       export_pending_html: Un export au format %{export_format} est en train d’être généré<br>(demandé il y a %{export_time})
+      download_archive: Télécharger une archive au format .zip de tous les dossiers et leurs pièces jointes
+      archive_pending_html: Archive en cours de création<br>(demandée il y a %{created_period})
+      archive_ready_html: Télécharger l'archive<br>(demandée il y a %{generated_period})
diff --git a/config/routes.rb b/config/routes.rb
index bb953ffa4..acdac88ea 100644
--- a/config/routes.rb
+++ b/config/routes.rb
@@ -383,6 +383,8 @@ Rails.application.routes.draw do
             get 'telecharger_pjs' => 'dossiers#telecharger_pjs'
           end
         end
+
+        resources :archives, only: [:index, :create, :show], controller: 'archives'
       end
     end
     get "recherche" => "recherche#index"
diff --git a/db/migrate/20201104163658_create_archive_for_groupe_instructeur.rb b/db/migrate/20201104163658_create_archive_for_groupe_instructeur.rb
new file mode 100644
index 000000000..51793681c
--- /dev/null
+++ b/db/migrate/20201104163658_create_archive_for_groupe_instructeur.rb
@@ -0,0 +1,17 @@
+class CreateArchiveForGroupeInstructeur < ActiveRecord::Migration[6.0]
+  def change
+    create_table :archives do |t|
+      t.string :status, null: false
+      t.date :month
+      t.string :content_type, null: false
+      t.timestamps
+    end
+
+    create_table "archives_groupe_instructeurs", force: :cascade do |t|
+      t.belongs_to :archive, foreign_key: true, null: false
+      t.belongs_to :groupe_instructeur, foreign_key: true, null: false
+
+      t.timestamps
+    end
+  end
+end
diff --git a/db/migrate/20210427112642_rename_content_type_to_to_time_span_type_for_archives.rb b/db/migrate/20210427112642_rename_content_type_to_to_time_span_type_for_archives.rb
new file mode 100644
index 000000000..be6d5a404
--- /dev/null
+++ b/db/migrate/20210427112642_rename_content_type_to_to_time_span_type_for_archives.rb
@@ -0,0 +1,5 @@
+class RenameContentTypeToToTimeSpanTypeForArchives < ActiveRecord::Migration[6.1]
+  def change
+    rename_column :archives, :content_type, :time_span_type
+  end
+end
diff --git a/db/migrate/20210427124500_add_key_to_archives.rb b/db/migrate/20210427124500_add_key_to_archives.rb
new file mode 100644
index 000000000..08559a0dc
--- /dev/null
+++ b/db/migrate/20210427124500_add_key_to_archives.rb
@@ -0,0 +1,6 @@
+class AddKeyToArchives < ActiveRecord::Migration[6.1]
+  def change
+    add_column :archives, :key, :text, null: false
+    add_index :archives, [:key, :time_span_type, :month], unique: true
+  end
+end
diff --git a/db/schema.rb b/db/schema.rb
index 956e5a302..eefe0112f 100644
--- a/db/schema.rb
+++ b/db/schema.rb
@@ -10,7 +10,7 @@
 #
 # It's strongly recommended that you check this file into your version control system.
 
-ActiveRecord::Schema.define(version: 2021_04_27_120002) do
+ActiveRecord::Schema.define(version: 2021_04_27_124500) do
 
   # These are extensions that must be enabled in order to support this database
   enable_extension "plpgsql"
@@ -81,6 +81,25 @@ ActiveRecord::Schema.define(version: 2021_04_27_120002) do
     t.index ["procedure_id"], name: "index_administrateurs_procedures_on_procedure_id"
   end
 
+  create_table "archives", force: :cascade do |t|
+    t.string "status", null: false
+    t.date "month"
+    t.string "time_span_type", null: false
+    t.datetime "created_at", precision: 6, null: false
+    t.datetime "updated_at", precision: 6, null: false
+    t.text "key", null: false
+    t.index ["key", "time_span_type", "month"], name: "index_archives_on_key_and_time_span_type_and_month", unique: true
+  end
+
+  create_table "archives_groupe_instructeurs", force: :cascade do |t|
+    t.bigint "archive_id", null: false
+    t.bigint "groupe_instructeur_id", null: false
+    t.datetime "created_at", precision: 6, null: false
+    t.datetime "updated_at", precision: 6, null: false
+    t.index ["archive_id"], name: "index_archives_groupe_instructeurs_on_archive_id"
+    t.index ["groupe_instructeur_id"], name: "index_archives_groupe_instructeurs_on_groupe_instructeur_id"
+  end
+
   create_table "assign_tos", id: :serial, force: :cascade do |t|
     t.integer "instructeur_id"
     t.datetime "created_at"
@@ -735,6 +754,8 @@ ActiveRecord::Schema.define(version: 2021_04_27_120002) do
   end
 
   add_foreign_key "active_storage_variant_records", "active_storage_blobs", column: "blob_id"
+  add_foreign_key "archives_groupe_instructeurs", "archives"
+  add_foreign_key "archives_groupe_instructeurs", "groupe_instructeurs"
   add_foreign_key "assign_tos", "groupe_instructeurs"
   add_foreign_key "attestation_templates", "procedures"
   add_foreign_key "attestations", "dossiers"
diff --git a/spec/controllers/instructeurs/archives_controller_spec.rb b/spec/controllers/instructeurs/archives_controller_spec.rb
new file mode 100644
index 000000000..7ce7e4d22
--- /dev/null
+++ b/spec/controllers/instructeurs/archives_controller_spec.rb
@@ -0,0 +1,56 @@
+describe Instructeurs::ArchivesController, type: :controller do
+  let(:procedure1) { create(:procedure, :published, groupe_instructeurs: [gi1]) }
+  let(:procedure2) { create(:procedure, :published, groupe_instructeurs: [gi2]) }
+  let!(:instructeur) { create(:instructeur, groupe_instructeurs: [gi1, gi2]) }
+  let!(:archive1) { create(:archive, :generated, groupe_instructeurs: [gi1]) }
+  let!(:archive2) { create(:archive, :generated, groupe_instructeurs: [gi2]) }
+  let(:gi1) { create(:groupe_instructeur) }
+  let(:gi2) { create(:groupe_instructeur) }
+
+  before do
+    sign_in(instructeur.user)
+    Flipper.enable(:archive_zip_globale, procedure1)
+  end
+
+  after { Timecop.return }
+
+  describe '#index' do
+    before do
+      create_dossier_for_month(procedure1, 2021, 3)
+      create_dossier_for_month(procedure1, 2021, 3)
+      create_dossier_for_month(procedure1, 2021, 2)
+      Timecop.freeze(Time.zone.local(2021, 3, 5))
+    end
+
+    it 'displays archives' do
+      get :index, { params: { procedure_id: procedure1.id } }
+
+      expect(assigns(:dossiers_termines).size).to eq(3)
+      expect(assigns(:archives)).to eq([archive1])
+    end
+  end
+
+  describe '#create' do
+    let(:month) { '21-03' }
+    let(:date_month) { Date.strptime(month, "%Y-%m") }
+    let(:archive) { create(:archive) }
+    let(:subject) do
+      post :create, {
+        params: { procedure_id: procedure1.id, type: 'monthly', month: month }
+      }
+    end
+
+    it "performs archive creation job" do
+      allow_any_instance_of(ProcedureArchiveService).to receive(:create_pending_archive).and_return(archive)
+      expect { subject }.to have_enqueued_job(ArchiveCreationJob).with(procedure1, archive, instructeur)
+      expect(flash.notice).to include("Votre demande a été prise en compte")
+    end
+  end
+
+  private
+
+  def create_dossier_for_month(procedure, year, month)
+    Timecop.freeze(Time.zone.local(year, month, 5))
+    create(:dossier, :accepte, :with_attestation, procedure: procedure)
+  end
+end
diff --git a/spec/controllers/instructeurs/dossiers_controller_spec.rb b/spec/controllers/instructeurs/dossiers_controller_spec.rb
index b31cb81c0..ab6d9ff5a 100644
--- a/spec/controllers/instructeurs/dossiers_controller_spec.rb
+++ b/spec/controllers/instructeurs/dossiers_controller_spec.rb
@@ -712,13 +712,6 @@ describe Instructeurs::DossiersController, type: :controller do
         dossier_id: dossier.id
       }
     end
-
-    context 'when zip download is disabled through flipflop' do
-      it 'is forbidden' do
-        subject
-        expect(response).to have_http_status(:forbidden)
-      end
-    end
   end
 
   describe "#delete_dossier" do
diff --git a/spec/factories/archive.rb b/spec/factories/archive.rb
new file mode 100644
index 000000000..41fbc2542
--- /dev/null
+++ b/spec/factories/archive.rb
@@ -0,0 +1,15 @@
+FactoryBot.define do
+  factory :archive do
+    time_span_type { 'everything' }
+    groupe_instructeurs { [association(:groupe_instructeur)] }
+    key { 'unique-key' }
+
+    trait :pending do
+      status { 'pending' }
+    end
+
+    trait :generated do
+      status { 'generated' }
+    end
+  end
+end
diff --git a/spec/features/instructeurs/expert_spec.rb b/spec/features/instructeurs/expert_spec.rb
index d361b3cf3..a384687b6 100644
--- a/spec/features/instructeurs/expert_spec.rb
+++ b/spec/features/instructeurs/expert_spec.rb
@@ -12,6 +12,8 @@ feature 'Inviting an expert:', js: true do
 
   context 'as an Instructeur' do
     scenario 'I can invite an expert' do
+      allow(ClamavService).to receive(:safe_file?).and_return(true)
+
       # assign instructeur to linked dossier
       instructeur.assign_to_procedure(linked_dossier.procedure)
 
diff --git a/spec/features/instructeurs/instruction_spec.rb b/spec/features/instructeurs/instruction_spec.rb
index e24f3c48c..257ca2a73 100644
--- a/spec/features/instructeurs/instruction_spec.rb
+++ b/spec/features/instructeurs/instruction_spec.rb
@@ -165,10 +165,10 @@ feature 'Instructing a dossier:', js: true do
 
       expect(DownloadHelpers.download).to include "dossier-#{dossier.id}.zip"
       expect(files.size).to be 3
-      expect(files[0].filename.include?('piece_justificative_0')).to be_truthy
-      expect(files[0].uncompressed_size).to be File.size(path)
-      expect(files[1].filename.include?('horodatage/operation')).to be_truthy
-      expect(files[2].filename.include?('dossier/export')).to be_truthy
+      expect(files[0].filename.include?('export')).to be_truthy
+      expect(files[1].filename.include?('piece_justificative_0')).to be_truthy
+      expect(files[1].uncompressed_size).to be File.size(path)
+      expect(files[2].filename.include?('horodatage/operation')).to be_truthy
     end
 
     scenario 'A instructeur can download an archive containing several identical attachments' do
@@ -180,13 +180,13 @@ feature 'Instructing a dossier:', js: true do
 
       expect(DownloadHelpers.download).to include "dossier-#{dossier.id}.zip"
       expect(files.size).to be 4
-      expect(files[0].filename.include?('piece_justificative_0')).to be_truthy
+      expect(files[0].filename.include?('export')).to be_truthy
       expect(files[1].filename.include?('piece_justificative_0')).to be_truthy
-      expect(files[0].filename).not_to eq files[1].filename
-      expect(files[0].uncompressed_size).to be File.size(path)
+      expect(files[2].filename.include?('piece_justificative_0')).to be_truthy
+      expect(files[1].filename).not_to eq files[2].filename
       expect(files[1].uncompressed_size).to be File.size(path)
-      expect(files[2].filename.include?('horodatage/operation')).to be_truthy
-      expect(files[3].filename.include?('dossier/export')).to be_truthy
+      expect(files[2].uncompressed_size).to be File.size(path)
+      expect(files[3].filename.include?('horodatage/operation')).to be_truthy
     end
 
     before { DownloadHelpers.clear_downloads }
diff --git a/spec/models/archive_spec.rb b/spec/models/archive_spec.rb
new file mode 100644
index 000000000..5753340d3
--- /dev/null
+++ b/spec/models/archive_spec.rb
@@ -0,0 +1,51 @@
+describe Dossier do
+  include ActiveJob::TestHelper
+
+  before { Timecop.freeze(Time.zone.now) }
+  after { Timecop.return }
+
+  let(:archive) { create(:archive) }
+
+  describe 'scopes' do
+    describe 'staled' do
+      let(:recent_archive) { create(:archive) }
+      let(:staled_archive) { create(:archive, updated_at: (Archive::RETENTION_DURATION + 2).days.ago) }
+
+      subject do
+        archive; recent_archive; staled_archive
+        Archive.stale
+      end
+
+      it { is_expected.to match_array([staled_archive]) }
+    end
+  end
+
+  describe '.status' do
+    it { expect(archive.status).to eq('pending') }
+  end
+
+  describe '#make_available!' do
+    before { archive.make_available! }
+    it { expect(archive.status).to eq('generated') }
+  end
+
+  describe '#available?' do
+    subject { archive.available? }
+    context 'without attachment' do
+      let(:archive) { create(:archive, file: nil) }
+      it { is_expected.to eq(false) }
+    end
+
+    context 'with an attachment' do
+      context 'when the attachment was created but the process was not over' do
+        let(:archive) { create(:archive, :pending, file: Rack::Test::UploadedFile.new('spec/fixtures/files/file.pdf', 'application/pdf')) }
+        it { is_expected.to eq(false) }
+      end
+
+      context 'when the attachment was created but the process was not over' do
+        let(:archive) { create(:archive, :generated, file: Rack::Test::UploadedFile.new('spec/fixtures/files/file.pdf', 'application/pdf')) }
+        it { is_expected.to eq(true) }
+      end
+    end
+  end
+end
diff --git a/spec/services/pieces_justificatives_service_spec.rb b/spec/services/pieces_justificatives_service_spec.rb
index d0ad55499..fc151f908 100644
--- a/spec/services/pieces_justificatives_service_spec.rb
+++ b/spec/services/pieces_justificatives_service_spec.rb
@@ -16,7 +16,12 @@ describe PiecesJustificativesService do
     # to be exported
     it 'ensures no titre identite is given' do
       expect(champ_identite.piece_justificative_file).to be_attached
-      expect(subject).to eq([])
+      expect(subject.any? { |piece| piece.name == 'piece_justificative_file' }).to be_falsy
+    end
+
+    it 'returns export pdf of the dossier' do
+      expect(champ_identite.piece_justificative_file).to be_attached
+      expect(subject.any? { |piece| piece.name == 'pdf_export_for_instructeur' }).to be_truthy
     end
   end
 end
diff --git a/spec/services/procedure_archive_service_spec.rb b/spec/services/procedure_archive_service_spec.rb
new file mode 100644
index 000000000..80e013f74
--- /dev/null
+++ b/spec/services/procedure_archive_service_spec.rb
@@ -0,0 +1,83 @@
+describe ProcedureArchiveService do
+  let(:procedure) { create(:procedure, :published) }
+  let(:instructeur) { create(:instructeur) }
+  let(:service) { ProcedureArchiveService.new(procedure) }
+  let(:year) { 2020 }
+  let(:month) { 3 }
+  let(:date_month) { Date.strptime("#{year}-#{month}", "%Y-%m") }
+  describe '#create_pending_archive' do
+    context 'for a specific month' do
+      it 'creates a pending archive' do
+        archive = service.create_pending_archive(instructeur, 'monthly', date_month)
+
+        expect(archive.time_span_type).to eq 'monthly'
+        expect(archive.month).to eq date_month
+        expect(archive.pending?).to be_truthy
+      end
+    end
+
+    context 'for all months' do
+      it 'creates a pending archive' do
+        archive = service.create_pending_archive(instructeur, 'everything')
+
+        expect(archive.time_span_type).to eq 'everything'
+        expect(archive.month).to eq nil
+        expect(archive.pending?).to be_truthy
+      end
+    end
+  end
+
+  describe '#collect_files_archive' do
+    before do
+      create_dossier_for_month(year, month)
+      create_dossier_for_month(2020, month)
+    end
+
+    after { Timecop.return }
+
+    context 'for a specific month' do
+      let(:archive) { create(:archive, time_span_type: 'monthly', status: 'pending', month: date_month) }
+      let(:year) { 2021 }
+      let(:mailer) { double('mailer', deliver_later: true) }
+
+      it 'collect files' do
+        expect(InstructeurMailer).to receive(:send_archive).and_return(mailer)
+
+        service.collect_files_archive(archive, instructeur)
+
+        archive.file.open do |f|
+          files = ZipTricks::FileReader.read_zip_structure(io: f)
+          expect(files.size).to be 2
+          expect(files.first.filename).to include("export")
+          expect(files.last.filename).to include("attestation")
+        end
+        expect(archive.file.attached?).to be_truthy
+      end
+    end
+
+    context 'for all months' do
+      let(:archive) { create(:archive, time_span_type: 'everything', status: 'pending') }
+      let(:mailer) { double('mailer', deliver_later: true) }
+
+      it 'collect files' do
+        expect(InstructeurMailer).to receive(:send_archive).and_return(mailer)
+
+        service.collect_files_archive(archive, instructeur)
+
+        archive = Archive.last
+        archive.file.open do |f|
+          files = ZipTricks::FileReader.read_zip_structure(io: f)
+          expect(files.size).to be 4
+        end
+        expect(archive.file.attached?).to be_truthy
+      end
+    end
+  end
+
+  private
+
+  def create_dossier_for_month(year, month)
+    Timecop.freeze(Time.zone.local(year, month, 5))
+    create(:dossier, :accepte, :with_attestation, procedure: procedure)
+  end
+end
diff --git a/spec/views/instructeur/procedures/_download_dossiers.html.haml_spec.rb b/spec/views/instructeur/procedures/_download_dossiers.html.haml_spec.rb
index 947ce178f..8fb8f346e 100644
--- a/spec/views/instructeur/procedures/_download_dossiers.html.haml_spec.rb
+++ b/spec/views/instructeur/procedures/_download_dossiers.html.haml_spec.rb
@@ -12,5 +12,15 @@ describe 'instructeurs/procedures/_download_dossiers.html.haml', type: :view do
   context "when procedure has at least 1 dossier" do
     let(:dossier_count) { 1 }
     it { is_expected.to include("Télécharger tous les dossiers") }
+
+    context "With zip archive enabled" do
+      before { Flipper.enable(:archive_zip_globale, procedure) }
+      it { is_expected.to include("Télécharger une archive au format .zip") }
+    end
+
+    context "With zip archive disabled" do
+      before { Flipper.disable(:archive_zip_globale, procedure) }
+      it { is_expected.not_to include("Télécharger une archive au format .zip") }
+    end
   end
 end