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+@startuml get.gov registrar deployment
+!include https://raw.githubusercontent.com/plantuml-stdlib/C4-PlantUML/master/C4_Deployment.puml
+
+LAYOUT_WITH_LEGEND()
+title get.gov registrar deployment
+skinparam linetype polyline
+
+Person(team, "get.gov developer", "Code Writer")
+
+Deployment_Node(aws, "AWS GovCloud", "Amazon Web Services Region") {
+    Deployment_Node(cloudgov, "cloud.gov", "Cloud Foundry PaaS") {
+        System_Ext(cloudgov_router, "cloud.gov router", "Cloud Foundry service")
+        System_Ext(cloudgov_uaa, "cloud.gov authentication", "Cloud Foundry service")
+        System_Ext(cloudgov_controller, "cloud.gov controller", "Cloud Foundry orchestration")
+        System_Ext(cloudgov_dashboard, "cloud.gov dashboard", "Cloud Foundry web UI")
+        System_Ext(cloudgov_logdrain, "logs.fr.cloud.gov", "ELK")
+        Boundary(atob, "ATO boundary") {
+            Deployment_Node(organization, "get.gov organization") {
+                Deployment_Node(unstable, "unstable space") {
+                    System_Boundary(dashboard_unstable, "get.gov registrar") {
+                        Container(getgov_app_unstable, "Registrar Application", "Python, Django", "Delivers static HTML/CSS and forms")
+                        ContainerDb(dashboard_db_unstable, "Unstable PostgreSQL Database", "AWS RDS", "Stores agency information and reports")
+                    }
+                }
+                Deployment_Node(staging, "staging space") {
+                    System_Boundary(dashboard_staging, "get.gov registrar") {
+                        Container(getgov_app_staging, "Registrar Application", "Python, Django", "Delivers static HTML/CSS and forms")
+                        ContainerDb(dashboard_db_staging, "Staging PostgreSQL Database", "AWS RDS", "Stores agency information and reports")
+                    }
+                }
+            }
+        }
+    }
+}
+
+' Logs flow
+Rel(staging, cloudgov_logdrain, "logs to", "stdout/stderr")
+Rel(team, cloudgov_logdrain, "reviews logs", "https (443)")
+
+Rel(team, cloudgov_uaa, "authenticates with", "https (443)")
+Rel(team, cloudgov_dashboard, "inspects", "https (443)")
+Rel(cloudgov_dashboard, cloudgov_controller, "inspects and manipulates state", "https (443)")
+
+' Deployment
+Boundary(deploymentservices, "Deployment services") {
+    Deployment_Node(github, "CI/CD Pipeline", "open source"){
+        System(github_repo, "cisagov/getgov", "Code repository")
+        System_Ext(github_actions_deploy, "github actions", "deploy")
+        System_Ext(github_actions_test, "github actions", "test, security check")
+    }
+}
+Rel(github_repo, github_actions_test, "pushes to all branches trigger test suite")
+Rel(github_repo, github_actions_deploy, "pushes to main trigger deployment")
+Rel(team, github_repo, "commits code, makes pull-request, approves PRs", "https (443)")
+Rel(github_actions_deploy, cloudgov_controller, "pushes code, invokes tasks", "https (443)")
+Rel(github_actions_deploy, cloudgov_router, "runs smoke tests on URLs", "https (443)")
+Rel(cloudgov_controller, staging, "provisions/operates apps and services", "admin access limited")
+Rel(cloudgov_controller, unstable, "provisions/operates apps and services")
+
+Rel(getgov_app_staging, dashboard_db_staging, "reads agency info, reads/writes reports, ", "postgres (5432)")
+Rel(getgov_app_unstable, dashboard_db_unstable, "reads agency info, reads/writes reports, ", "postgres (5432)")
+
+Rel(cloudgov_router, getgov_app_staging, "proxies to", "https GET/POST (443)")
+
+@enduml
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