Thanks Anil. We use WebSDK and I don't see the s_ecid is being consistently dropped in the browsers. So we had to fall back on AMCV.

I am trying to find the difference and relation between these two cookies. Can you someone provide more details?

Have you whitelist your domain under settings on target?

You need to capture the heap dump for further analysis. 

Yes, this was working on our local codebase.

I would recommend to deploy the ACS packages manually. If you use Cloud Manager, it will complain about security vulnerabilities.

You should be able to use EFs in static templates.https://experienceleague.adobe.com/docs/experience-manager-learn/sites/experience-fragments/experience-fragments-feature-video-use.html?lang=enhttps://medium.com/exadel-digital-marketing-technology-practice/aem-experience-fragments-templates-5047bc78...

Great!

You can use Dynamic Media (DM) for both AEM as Cloud and other specific AEM versions.  #1. Correct. Once you purchase the DM, you can ask your Adobe rep to create multiple accounts. So you can use individual accounts on different environments (DM credentials are same for all envs). Once these accoun...

Are you setting the AEM as Cloud on your local? First, there is no localhost:4503/content.html. Try login here: localhost:4503/libs/granite/core/content/login.html and go to: localhost:4503/crx/de. If you're seeing this then your server is up and running fine. If you want to go to UI then try this: ...