update ADR list and add ADR for workspace use

architecture-decision-record/0032-ncsc-pdns-not-at-platform-level.md

@@ -4,7 +4,7 @@ Date: 2024-07-10
 
 ## Status
 
-🤔 Proposed
+✅ Accepted
 
 ## Context
 

architecture-decision-record/0034-use-cloud-map.md

@@ -1,4 +1,4 @@
-# 33. Use of AWS Cloud Map
+# 34. Use of AWS Cloud Map
 
 Date: 2024-12-01
 

architecture-decision-record/0035-terraform-workspaces.md

@@ -0,0 +1,20 @@
+# 35. Use of Terraform Workspaces
+
+Date: 2024-12-01
+
+## Status
+
+✅ Accepted
+
+## Context
+
+Terraform [workspaces](https://developer.hashicorp.com/terraform/language/state/workspaces) allow us to use code consistently across environments while maintain separation of state files.
+
+## Decision
+
+We will continue the use of workspaces for separation. Code which uses the `default` workspace will be documented here as an exception.
+
+## Exceptions
+
+* `terraform/modernisation-platform-account`
+* `terraform/github`

architecture-decision-record/README.md

@@ -35,8 +35,10 @@ This is our architecture decision log, made during the design and build of the M
 1. ♻ [How we deploy shared Active Directory controllers](0029-how-we-deploy-shared-active-directory-controllers.md)
 1. ✅ [Cross environment network access](0030-cross-environment-network-access.md)
 1. ✅ [LLMs will be hosted on the Analytical Platform](0031-llms-will-be-hosted-on-the-analytical-platform.md)
-1. 🤔 [NCSC PDNS will not be applied at platform level](0032-ncsc-pdns-not-at-platform-level.md)
-
+1. ✅ [NCSC PDNS will not be applied at platform level](0032-ncsc-pdns-not-at-platform-level.md)
+1. ❌ [Increase security of sensitive S3 objects (state bucket)](0033-s3-state-bucket-condition-security.md)
+1. ❌ [Use of AWS Cloud Map](0034-use-cloud-map.md)
+1. ✅ [Use of Terraform Workspaces](0035-terraform-workspaces.md)
 
 ## Statuses