# REST API

> REST API (Representational State Transfer Application Programming Interface) is a set of rules that allows different software applications to communicate over the internet.

- **URL**: https://dodopayments.com/glossary/rest-api

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## What is REST API?

REST API (Representational State Transfer Application Programming Interface) is a set of rules that allows different software applications to communicate over the internet.

It uses standard web protocols like HTTP to request and exchange data between a client (e.g., a mobile app) and a server (e.g., a database).

REST APIs are lightweight and scalable, making them ideal for SaaS startups or indie hackers to integrate services efficiently.

### Why is it Important?

REST APIs are important for building user-friendly, connected, and seamless software products while saving time and resources.

## Learn More

- [Designing payments architecture for SaaS](https://dodopayments.com/blogs/payments-architecture-saas)
- [How to automate SaaS billing operations](https://dodopayments.com/blogs/billing-automation-saas)
- [What payment orchestration solves for scale](https://dodopayments.com/blogs/payment-orchestration)