Remember, when we used to tinker with the Android Device we always needed fastboot or ADB. Until now it was only available via downloading the bulky Android Studio or SDK files to tinker a little stuff on Android OS. Earlier, The independent tools were also available but don’t know the credibility of them. The host could have added the malicious code or anything else.
Now, Google have taken this thing on their servers. They have made the Development tools like ADB, Fastboot, etc in small Zips of merely 2-3 MB. you can directly download them easily from Google to perform any development task which only need these little tools.
All three major operating systems have been added to the list of downloads.
You can hit the source link below to download the independent zips form Google.
Source: Elliot Hughes