14.3 acts as the bridge to Symantec’s cloud console. Even if you stay on-premises, the hooks for hybrid management are much more robust.
Smooth Transition: Upgrading Symantec Endpoint Protection (SEP) 14.2 to 14.3 symantec endpoint protection upgrade 14.2 to 14.3
Before starting the upgrade, verify these environmental requirements: symantec endpoint protection upgrade 14.2 to 14.3
If you are looking for the "paper" on this upgrade, you are likely looking for the or the Migration Guide . However, here is an analysis of the most interesting technical aspects of that specific transition. symantec endpoint protection upgrade 14.2 to 14.3