Android 4.4.4 was released in June 2014. It represents the mature point of the "decoupling" strategy. While the OS itself is ancient by modern standards, the Google Play Services APK running on it acts as a bridge, allowing a 2014 operating system to run 2016-2017 apps (to a limit) and modern security protocols.
A user named CodeArchaeologist had posted a link. Google Play Services Android 4.4.4 Apk
: Added new activity recognition features (e.g., detecting if a user is walking or running). Android 4