The SDK Platform-Tools are a part of the Android SDK (Software Development Kit), which is a set of tools for developing Android apps. The Platform-Tools package includes several command-line utilities, such as:

A tool for recording and analyzing device performance at the system level. Quick Setup Guide for Windows SDK Platform Tools release notes | Android Studio

Used to manipulate the device's bootloader. It is essential for flashing firmware updates, recoveries, or "unbricking" a device that won't boot.

If version info appears, the installation succeeded.

A versatile tool that lets you manage your device, install apps ( adb install ), and access a Unix shell.