Having ADB and fastboot available outside of the other two main downloads, first of all, saves space. Android SDK takes up 292 MB of space.

Google has started hosting platform tools downloads without the other stuff that are a mere 3.5MB. You can get the platform tools for Windows, Linux, or Mac direct from Google's servers.

Google’s Fuchsia team has begun a new effort that would allow Fuchsia devices to be managed with the ADB tool, just like an Android phone.

Enabling ADB debugging allows you to run commands from your command line which communicate with your Android Wear device much like you may have done with your Android phone or tablet.

Using the sideload command, and the newest version of adb from the Android SDK, one could update their Nexus device through stock recovery, without having to root or flash a custom recovery.

Vendors have been shipping Android products with Android Debug Bridge enabled, making them attractive targets for hackers.

Simple ADB Backup is the work of XDA developer omegavesko, who's released it for free over at the XDA Developer forums. Hit the link below to download it there.