Architecture
What is SDK?
Software Development Kit — a collection of tools, libraries, and documentation for building on a platform.
Definition
An SDK (Software Development Kit) is a package that provides developers with tools, libraries, code samples, and documentation to build applications for a specific platform or service. SDKs abstract away low-level API calls, handle authentication, provide type definitions, and offer helper functions. Examples: AWS SDK, Stripe SDK, Firebase SDK, Twilio SDK. SDKs are typically available for multiple languages.