An API is a set of rules that allows software programs to communicate with each other. It’s what lets apps and systems “talk” and share data.
Why it matters:
- Makes integration between systems possible (e.g., linking a payment system to an online store).
- Saves development time because developers can use pre-built functions instead of writing code from scratch.
- Powers everyday conveniences like logging in with Google or connecting apps together.
Pro tip: When evaluating software, always ask about its API availability — it determines how well that tool can work with others.
« Back to Glossary Index