What is an API?

An API (Application Programming Interface) is a defined set of rules that lets two separate software systems talk to each other — sending and receiving data in a structured, predictable way, without either system needing to know how the other works internally.

Everyday API Examples

• A website checkout page connecting to a payment gateway like Razorpay
• A travel site pulling live flight prices from an airline's system
• A shipping tracker showing real-time courier status on your order page
• A weather widget pulling live data from a weather service

Why APIs Matter for Custom Web Apps

Modern web applications rarely build everything from scratch — APIs let a website plug into existing, specialized services (payments, maps, SMS, inventory systems) instead of reinventing them.

"An API is a translator — it lets two systems that speak different languages understand each other."

Want help putting this into practice? Our Website Development team can walk you through it.