DEV-3798 Document the new ECS Strategy

.gitignore

@@ -110,3 +110,5 @@ yarn.lock
 
 **/llms.txt
 **/llms-full.txt
+
+.claude/settings.local.json

docs/jumpstart/action-items.mdx

@@ -204,7 +204,12 @@ If your engagement with Cloud Posse includes Release Engineering, we will also n
     </Step>
 
     <Step>
-      ### <StepNumber/> PATs for ECS with `ecspresso`
+      ### <StepNumber/> PATs for ECS with `ecspresso` (Deprecated)
+
+      :::note
+      This step can likely be skipped. The ecspresso-based ECS deployment approach is deprecated in favor of [ECS with Atmos](/layers/software-delivery/ecs-atmos/), which does not require these PATs.
+      :::
+
       <Steps>
         - Create one fine-grained PAT with the following permission.
           Please see [Creating a fine-grained personal access token](https://docs.github.com/en/authentication/keeping-your-account-and-data-secure/managing-your-personal-access-tokens#creating-a-fine-grained-personal-access-token)