Hi @lawrence Danial
Thanks For posting this on the Q&A platform.
I understand you want to know when Azure AD Connect Version 2.2.1.0 will be discontinued and if it is the same as Microsoft Entra Connect Sync.
Azure AD Connect version 2.2.1.0, released on 11/9/2022, is supported under Microsoft's Modern Lifecycle Policy. However, I would like to point out that Microsoft typically supports each version for 12 months after the release of a subsequent version. Given that Azure AD Connect version 2.3.x has already been released, version 2.2.1.0 will likely reach its end of support by 11 Oct 2024
https://learn.microsoft.com/en-us/entra/identity/hybrid/connect/reference-connect-version-history
Please feel free to contact me if you need any more help.
Siri