AEMaaCS: what folders are immutable and mutable during deployment? | Community
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jayv25585659
Level 8
August 26, 2025
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AEMaaCS: what folders are immutable and mutable during deployment?

  • August 26, 2025
  • 1 reply
  • 875 views

I know apps and libs are immutable. I know I can write in /content and /conf. But I'm unsure what other folders can be written into during deployment.

Thanks!

Best answer by arunpatidar

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 

1 reply

arunpatidar
Community Advisor
arunpatidarCommunity AdvisorAccepted solution
Community Advisor
August 26, 2025

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 

Arun Patidar