AEMaaCS: what folders are immutable and mutable during deployment?

Hi @jayv25585659 

The /apps and /libs areas of AEM are considered immutable because they cannot be changed (create, update, delete) after AEM starts (that is, at runtime). Any attempt to change an immutable area at runtime fails.

Everything else in the repository, /content, /conf, /var, /etc, /oak:index, /system, /tmp, and so on, are all mutable areas, meaning they can be changed at runtime.

Please check

https://experienceleague.adobe.com/en/docs/experience-manager-cloud-service/content/implementing/developing/aem-project-content-package-structure#mutable-vs-immutable