SDK
Like a starter toolkit with pre-cut parts, it gives ready-made code pieces to talk to a service.
Imagine a flat-pack kit that includes the tools and parts you need. An SDK, short for software development kit, is a bundle of code libraries and helpers for a specific service.
Using an SDK means fewer low-level details, so you can call clear functions instead of hand-writing network requests. Stripe, Supabase, and Resend all ship SDKs for JavaScript, which is the language React Native uses.
You install the SDK, then call functions like signIn or createPaymentIntent, which are named actions the service understands. Keep secret keys, the private codes the SDK uses, out of the app and on the server.