Preventing background processes from constantly "calling home" can save bandwidth and minor CPU cycles.
Some users block updates to ensure that their current, stable version of an app doesn't automatically change or break during a critical project. Top Adobe Domains to Block (Summary) adobe hosts file block list top
While many users modify their hosts file to maintain offline use of legitimate software, there are several functional reasons for implementing a block list: adobe hosts file block list top
These domains handle the core "call home" functions for license verification: activate.adobe.com licenses.adobe.com lm.licenses.adobe.com practivate.adobe.com genuine.adobe.com Telemetry & Analytics These servers collect and receive user data: adobe hosts file block list top