For Non cloud, like you said CRX2OAK is the option. Used in AMS/On Prem set up for transferring with version. 

@SrinivasCh4  Please check this DM configuration in your AEM Author instance. https://experienceleague.adobe.com/en/docs/experience-manager-65/content/assets/dynamic/dm-general-settings If you want to create a alias domain name and deliver the assets from that , please follow the steps mentioned her...

@MatijaLeskovic  I would suggest to check with Adobe with a ticket? In AEM 6.5.21 , the component live usage references scroll also is broken, that have been fixed in SP 22. Similarly this issue also could be one scroll issue.   

@YegorKo We also noticed the asset selector UI is very limited. If you are having multiple line of business and multi domain assets in AEM Assets and there is no way to restrict the search by folder in UI then it not usable. 

@Mahesh_Gunaje  Check this one on encapsulated token like other suggested.  https://experienceleague.adobe.com/en/docs/experience-manager-65/content/security/encapsulated-token 

@KiranMa1  Have you checked this documentation? especially on how to fix Image preview not loading. Please test it lower environment or local instance. I haven't tested this. https://experienceleague.adobe.com/en/docs/experience-manager-65/content/assets/dynamic/troubleshoot-dms7    

@mancillaign Hope you looked at this  https://www.aem.live/docs/bulk-metadata !

@ayyappavenkatesh  Please check the below 2 posts and links inside of those. https://experienceleaguecommunities.adobe.com/t5/adobe-experience-manager/migrating-15tb-asset-to-aem-cloud/td-p/594576 https://medium.com/@bsaravanaprakash/how-we-migrated-a-million-assets-into-aem-cloud-service-dam-ef7eb7...

Hi @Som_Adobe    On Cloud migration Even if you want to go to cloud first you still need consolidate all these applications which are running in diff AEM version and Java version into one version and be cloud ready in terms of code practice and fixing all the vulnerabilities to use the cloud manager...

@Mahesh_Gunaje You can also check your readiness for the exam with this https://scorpion.caveon.com/launchpad/ad-q-e129-readiness-questionnaire-for-adobe-aem-assets-developer-professional-exam-copy-ycpz52/ad-q-e117-readiness-questionnaire-for-adobe-aem-architect-master-exam   if you do a generic goo...