# API Integration Explained for Business Owners in Kathmandu, Nepal

> An API is a defined way for two pieces of software to talk to each other, such as your website sending a payment to eSewa or an SMS confirmation. Whether a usable API exists decides what your website can connect to.

Source: https://webappnepal.com/blog/api-integration-explained
Provider: WebApp Nepal, Kathmandu, Nepal
Published: 2025-01-10
Updated: 2026-08-07T21:03:41.000000Z

An API, or application programming interface, comes up constantly in our conversations with business owners in Kathmandu, Nepal, even when they are not sure what it actually means. An API, or application programming interface, is simply a defined way for two pieces of software to talk to each other. When your website charges a customer through eSewa, checks a shipping rate, or sends an SMS confirmation, it is almost always communicating with someone else's system through an API.

This matters to a business owner because it determines what your website can realistically do. A booking system that needs to sync with a hotel's existing reservation software, or an e-commerce store that needs live inventory from a supplier, depends entirely on whether a usable API exists and how well it is documented.

When scoping a new project, we always ask early what third-party systems the business already uses, accounting software, SMS gateways, inventory tools, because integrating with them well can save significant manual work down the line. A website that talks to your existing tools is worth more than one that operates as an isolated island.

## Frequently asked questions

### What is an API?

An application programming interface is a defined way for two pieces of software to talk to each other, such as your site sending a payment to eSewa.

### Why should business owners care about APIs?

Whether a usable API exists determines what your website can connect to, such as inventory, accounting or SMS systems.

### What should I tell a developer about APIs?

List the third-party systems you already use so integrations can be scoped and priced early.