ICT Samachar
API stands for Application Programming Interface. It is a set of rules and protocols that helps different software applications communicate with each other. In simple terms, an API allows one application to interact with another application or system to exchange data and perform tasks.
It is not exactly a “processor,” but rather a bridge or connector that enables application development and integration.
Understanding API with an Example
Let’s understand APIs with a practical example. You may have used digital payment apps like eSewa or other online wallet services. When you open such an app, you see many options like:
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Bus ticket booking
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Money transfer
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Mobile recharge
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Utility bill payment
Have you ever wondered how a single app provides so many different services?
This is possible because of APIs.
When you book a ticket, transfer money, or purchase a service through an app or website, the app communicates with different service providers using APIs. The API connects the wallet app to banking systems, telecom companies, ticketing platforms, and other service providers.
In short, APIs allow multiple systems and databases to connect and work together seamlessly.
Why APIs Are Important
A wallet app or website may have connections with many different platforms. It must handle:
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A large database
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Multiple service integrations
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Thousands or even millions of users at the same time
Since many users are online simultaneously performing different tasks, APIs play a major role in managing and integrating all these processes efficiently.
How Does an API Work?
Let’s understand this using a smartphone example.
You likely own a smartphone, whether it is Android or iOS. When you install a game or any app and open it for the first time, it asks for permissions such as:
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Location
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Camera
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Microphone
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Media storage
These permissions are required for the app to function properly. For example, if you install a camera app, it will request access to your phone’s camera, microphone, and storage.
Behind the scenes, APIs manage this communication between the app and the phone’s operating system. When you grant permission, the system checks what access has been approved and allows the app to use only those specific features.
Earlier versions of Android (before Android 4.0) had limited permission control options. Modern smartphones now allow users to control permissions more clearly and securely.
Whenever you grant permission, the operating system verifies it and provides access only to the approved resources. All of this interaction between apps and system components is handled through APIs.
Conclusion
APIs act as intermediaries that allow applications, systems, and services to communicate with each other securely and efficiently. Whether it is digital payments, ticket booking, social media, or smartphone permissions, APIs are the invisible technology that makes modern digital services possible.
