← Glossary
What does "API" mean in programming?
API is one of the most common terms in software development. This guide explains what it means, how it is used in practice, and why it matters, with real examples from the developer world.
Definition
Application Programming Interface. A defined set of rules that lets one software component communicate with another. APIs define what requests can be made, what format they use, and what responses to expect.
Example
"The frontend calls the backend API to fetch the user's profile data."
Related terms
Ready to practice your English at work?
Lingua-e has interactive exercises built around real developer conversations: standups, code reviews, retrospectives, and more. Practice until it comes naturally.
Try Lingua-e for free