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JohnDuraiJohnDurai 

Summer Release 21

Hi All - Can someone help me out on key points/updates related to "Enable Enhanced Domains"  and "Securely Access Aura Components" topics  with respect to Summer release 21. Thanks!
VinayVinay (Salesforce Developers) 
Hi John,

Check below references for details on "Enable Enhanced Domains"  and "Securely Access Aura Components".

Securely Access Aura Components (Update)
https://help.salesforce.com/articleView?id=release-notes.rn_aura_security_ru.htm&type=5&release=232

Enable Enhanced Domains
https://help.salesforce.com/articleView?id=sf.domain_name_enhanced.htm&type=5
https://help.salesforce.com/articleView?id=sf.domain_name_url_format_changes_enable_enhanced.htm&type=5

Would request you to go through below release notes which has detail information on Summer'21 release.

Salesforce Summer ’21 Release Notes
https://help.salesforce.com/articleView?id=release-notes.salesforce_release_notes.htm&type=5&release=232

Please mark as Best Answer if above information was helpful so that it can help others in the future.

Thanks,