diff --git a/modules/ROOT/assets/images/fedora_infra_diagram.drawio b/modules/ROOT/assets/images/fedora_infra_diagram.drawio
index 055b09e..1998747 100644
--- a/modules/ROOT/assets/images/fedora_infra_diagram.drawio
+++ b/modules/ROOT/assets/images/fedora_infra_diagram.drawio
@@ -1 +1 @@
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\ No newline at end of file
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\ No newline at end of file
diff --git a/modules/ROOT/assets/images/fedora_infra_diagram.drawio.svg b/modules/ROOT/assets/images/fedora_infra_diagram.drawio.svg
index 8fb4efd..bab6d8c 100644
--- a/modules/ROOT/assets/images/fedora_infra_diagram.drawio.svg
+++ b/modules/ROOT/assets/images/fedora_infra_diagram.drawio.svg
@@ -1,4 +1,4 @@
-
\ No newline at end of file
+
\ No newline at end of file
diff --git a/modules/ROOT/nav.adoc b/modules/ROOT/nav.adoc
index 507a910..b3645f1 100644
--- a/modules/ROOT/nav.adoc
+++ b/modules/ROOT/nav.adoc
@@ -1,6 +1,7 @@
* xref:overview.adoc[A global overview]
* xref:day_to_day_fedora.adoc[Working with Fedora Infrastructure]
* xref:join.adoc[Join the team]
+* xref:map_critical_services.adoc[Map of critical services]
* xref:services.adoc[List of our services]
** xref:services.adoc#_accounts[Account management]
** xref:services.adoc#_community[Community apps]
diff --git a/modules/ROOT/pages/map_critical_services.adoc b/modules/ROOT/pages/map_critical_services.adoc
new file mode 100644
index 0000000..b8f420e
--- /dev/null
+++ b/modules/ROOT/pages/map_critical_services.adoc
@@ -0,0 +1,224 @@
+= Map of critical services
+
+This document provides readers with a map of all critical services hosted by Fedora infra
+and their relationship with each other.
+It also contains a description of each app and reason why it's considered critical.
+
+.Map of critical services
+[#img-critical-map]
+[caption="Figure: "]
+image::fedora_infra_diagram.drawio.svg[link="../_images/fedora_infra_diagram.drawio.svg"]
+
+== Messaging bus
+[cols="1,1,1"]
+|===
+|Name |Description |Why it's critical?
+
+|https://www.rabbitmq.com/[RabbitMQ]
+|RabbitMQ is a message broker used by fedora messaging. It assures that the message
+is delivered from publisher to consumer.
+|Without it the messages will not be delivered and most of the infra will stop working.
+
+|https://github.com/fedora-infra/fedora-messaging[fedora messaging]
+|Python library for working with fedora messaging system. It helps you create fedora
+messaging publishers and consumers. Fedora messages are the main way the applications
+communicate with each other in Fedora infrastructure.
+|When there will be an issue with fedora messaging library it could cause issues
+with fedora messages and affect whole Fedora infrastructure.
+|===
+
+== Fedora Release
+[cols="1,1,1"]
+|===
+|Name |Description |Why it's critical?
+
+|https://pagure.io/pungi[pungi]
+|Pungi is a tool that creates composes of Fedora. It makes sure that all required
+packages are included in the compose and the compose is available after finishing.
+|Without pungi it would be much harder to create composes of Fedora.
+
+|https://github.com/fedora-infra/mirrormanager2[mirrormanager]
+|Mirrormanager is used to manage all the mirrors that are providing fedora packages.
+|Without it Fedora infra wouldn't be able to manage all the mirrors of Fedora and DNF wouldn't
+be able to automatically provide the best mirror for users.
+
+|https://pagure.io/odcs[ODCS]
+|ODCS (On Demand Compose Service) provides users Fedora composes on demand. It generates an RPM
+repository with packages provided by the configuration.
+|Without ODCS Fedora wouldn't be able to provide composes on demand.
+|===
+
+== Metadata providers
+[cols="1,1,1"]
+|===
+|Name |Description |Why it's critical?
+
+|https://github.com/product-definition-center/product-definition-center[PDC]
+|PDC (Product Definition Center) provides API that contains information about composes,
+releases, packages, repositories etc..
+|Plenty of other services in Fedora Infra are depending on the information stored in PDC
+and will stop to work when the PDC is not available.
+
+|https://pagure.io/mdapi[mdapi]
+|mdapi (MetaData API) is similar to PDC in a way that it provides API that allows users to
+obtain various metadata about Fedora packages. It contains information that is not available
+in PDC.
+|Plenty of other services in Fedora Infra are depending on the information stored in mdapi
+and will stop to work when the mdapi is not available.
+|===
+
+== Monitoring
+[cols="1,1,1"]
+|===
+|Name |Description |Why it's critical?
+
+|https://www.nagios.org/[Nagios]
+|Nagios is used by Fedora Infrastructure to watch the state of all the hardware we have available
+in Fedora infrastructure. It alerts members of Fedora Infra about any potential problem happening
+in infrastructure.
+|Nagios is essential for monitoring infrastructure and without it Fedora infra team will be in dark.
+
+|https://pagure.io/fedora-ci/monitor-gating[monitor-gating]
+|Monitor gating is service that runs dummy package through whole gating process. It files issue
+when any error happens.
+|Monitor gating helps us keeping eye on the health of the whole gating process and packaging workflow.
+|===
+
+== Infra tools
+[cols="1,1,1"]
+|===
+|Name |Description |Why it's critical?
+
+|https://pagure.io/fedora-infra/toddlers[toddlers]
+|Toddlers are a collection of fedora messaging consumers that are listening for various fedora messages
+and trigger tasks based on those messages.
+|Some of the tasks executed by toddlers are essential for whole Fedora Community.
+
+|https://pagure.io/fedora-infra/mirror_from_pagure[mirror_from_pagure]
+|Mirror from Pagure is a service that is mirroring git repositories to/from pagure to another git repository.
+|Ansible repository containing all deployment playbooks for Fedora Infrastructure needs to be hosted on
+both Pagure and directly on batcave (entry machine for fedora infra) in case the Pagure wouldn't work.
+mirror_from_pagure is taking care of that.
+|===
+
+== Authentication
+[cols="1,1,1"]
+|===
+|Name |Description |Why it's critical?
+
+|https://github.com/fedora-infra/noggin[noggin]
+|Noggin is a frontend for FreeIPA service and serves as a community facing part of Fedora Authentication Server
+(FAS).
+|Without it the users wouldn't be able to manage or access their Fedora accounts settings.
+
+|https://www.freeipa.org/page/Main_Page[IPA]
+|FreeIPA is an identity management service which handles authentication of Fedora users in Fedora ecosystem.
+|Without FreeIPA nobody would be able to authenticate with any Fedora service.
+
+|https://ipsilon-project.org/[Ipsilon]
+|Ipsilon is handling Single Sign-On (SSO) in Fedora ecosystem.
+|Without Ipsilon SSO in Fedora wouldn't work. Plenty of web apps in Fedora using SSO as a main authentication
+system.
+
+|https://github.com/fedora-infra/fasjson[fasjson]
+|FASJson is a gateway that allows to query data from FreeIPA.
+|Without FASJson we will lack the easy way to query data from FreeIPA which will cause plenty of apps to stop
+working as intended.
+
+|https://github.com/fedora-infra/fasjson-client[fasjson-client]
+|Client library for FASJson.
+|This library is used by various applications in Fedora infrastructure to communicate with FASJson. Issue with
+this library could cause these applications to stop working.
+|===
+
+== Packaging
+|===
+|Name |Description |Why it's critical?
+
+|https://pagure.io/waiverdb[waiverdb]
+|Companion app for ResultsDB that allows users to waive the results (allowing the packaging to continue
+even if the tests are failing).
+|Without it the users wouldn't be able to waive results.
+
+|https://pagure.io/taskotron/resultsdb[resultsdb]
+|Contains database of results for Fedora gating tests run by OpenQA.
+|Without it the package gating wouldn't work, because the results aren't stored anywhere.
+
+|https://pagure.io/ci-resultsdb-listener[ci-resultsdb-listener]
+|This component is listening for OpenQA announcement of tests results and then stores the results in resultsdb.
+|Without it the tests results wouldn't be stored and the package gating wouldn't work.
+
+|https://github.com/containerbuildsystem/osbs-client[OSBS]
+|OSBS (OpenShift Build System) is used to build container images for Fedora.
+|Without OSBS Fedora containers couldn't be built.
+
+|https://pagure.io/fm-orchestrator[MBS]
+|MBS (Module Build System) is used to build modules for Fedora.
+|Without MBS Fedora modules couldn't be built.
+
+|https://pagure.io/greenwave[greenwave]
+|Greenwave is a component that decides whether the package can pass gating or not.
+|Without Greenwave the packages will be stuck in the queue waiting for gating approval.
+
+|https://pagure.io/koji/[Koji]
+|Koji is a build system handling RPM package building.
+|Without Koji we wouldn't be able to build any RPM package.
+
+|https://github.com/fedora-infra/bodhi[Bodhi]
+|Bodhi is a system that manages package updates for Fedora distribution.
+|Without Bodhi packagers couldn't submit new updates for existing packages.
+
+|https://pagure.io/robosignatory[robosignatory]
+|Fedora messaging consumer that automatically signs artifacts.
+|Without Robosignatory no artifact would be automatically signed.
+
+|https://pagure.io/releng/tag2distrepo[tag2distrepo]
+|Koji plugin that automatically generates dist repositories on tag operations.
+|Without tag2distrepo packagers wouldn't be able to create repositories on specific tag.
+
+|https://pagure.io/sigul[sigul]
+|Component that does signing of the artifacts. Called by robosignatory.
+|Without sigul nothing in Fedora could be signed.
+
+|https://github.com/release-engineering/dist-git[dist-git]
+|Dist-git is used to initialize distribution git repository for Fedora.
+|Without dist-git we wouldn't be able to initialize new distribution git repository for Fedora.
+
+|https://github.com/fedora-infra/koschei[Koschei]
+|Koschei is a software for running a service for scratch-rebuilding RPM packages in Koji instance
+when their build-dependencies change or after some time elapse.
+|Without Koschei we wouldn't have automatic rebuild of packages on dependencies change.
+
+|https://pagure.io/pagure-dist-git[pagure-dist-git]
+|Pagure-dist-git is a plugin for Pagure which forms the base for web interface of Fedora
+https://src.fedoraproject.org/[dist-git].
+|Without pagure-dist-git there wouldn't be any web interface for dist-git for Fedora.
+
+|https://pagure.io/fedora-infra/rpmautospec[rpmautospec]
+|Python Package for Automatic Generation of RPM Release Fields and Changelogs.
+|Without rpmautospec some projects will lose the ability to automatically generate release fields
+and changelogs which will render those projects unbuildable.
+|===
+
+== Community facing
+|===
+|Name |Description |Why it's critical?
+
+|https://wiki.list.org/Mailman3[Mailman3]
+|GNU Mailman 3 is a set of apps used by Fedora to manage all their mailing lists.
+|Without Mailman3 mailing lists and archives wouldn't work.
+
+|https://pagure.io/pagure[Pagure]
+|Pagure is a git forge used by Fedora project. It is a main component of Fedora dist-git as well.
+|Without pagure most of the projects git repositories and issue trackers in Fedora are not available.
+
+|https://www.mediawiki.org/[wiki]
+|Mediawiki is used by Fedora as their choice of Wikipedia-like web server. It's powering
+https://fedoraproject.org/wiki[Fedora wiki pages].
+|Without wiki Fedora wiki pages wouldn't run.
+
+|https://github.com/fedora-infra/fmn[FMN]
+|FMN (FedMSG Notifications) is an application listening for messages in Fedora infra and based on the
+message sends notifications to users in Fedora projects.
+|Without FMN no notifications will be sent in Fedora Infra.
+|===