Android Sdk Tools Link -

that automatically handles updates for your platform tools, build tools, and system images. 2. Standalone Platform Tools (ADB & Fastboot)

Here is the write-up regarding the links, the current status of the tools, and where to find them now. android sdk tools link

Google no longer provides a standalone "SDK Tools" download without Android Studio for modern development. To get the latest adb , fastboot , and sdkmanager : that automatically handles updates for your platform tools,