A software development kit ("devkit") is typically a set of software development tools that allows the creation of apps for a specific platform. Typically an SDK includes one or more APIs, programming tools, and documentation. APK = ANDROID APPLICATION PACKAGE.
So, what is the use of SDK?
A software development kit (SDK or devkit) is typically a set of software development tools that allows the creation of applications for a certain software package, software framework, hardware platform, computer system, video game console, operating system, or similar development platform.
What is an API and SDK?
API is an interface that allows software programs to interact with each other, whereas a SDK is a set of tools that can be used to develop software applications targeting a specific platform.
What is the SDK for Android studio?
Android SDK is the part of Android Studio. Android SDK is "the tool" for building and compiling android app, while Android Studio is the GUI tool (IDE) for "consuming" Android SDK. However, Android SDK can be run stand-alone (by using command-prompt), or with the other IDE like Eclipse.