Table of Contents

What is API?

Table of Contents

Today we are talking about the Application Programming Interface. Read this article to build a better understanding of this useful and universal tool. On our channel, we share thoughts on recent developments in the tech industry, follow us not to miss new articles.

Application Programming Interface – API defines the interactions between various software intermediaries. There are many different uses for API and you don’t need to be a developer or know anything about the backend website and app development to use API.

Further, we will review different types of API as it pertains to specific industries and common uses. So, keep reading to know more about them.

Use Cases

1. API as an Abstraction Layer

Much like an abstraction layer, API often creates a more manageable format even protecting information. API enables the backend facility to create an abstraction layer.

2. Integration through Public APIs

Well, public API is a publicly available application programming interface that any developer can use to connect and share information through different services. Among the main benefits of integrating through public APIs, we define:

  • Collaboration: which means that utilizing public APIs offers the opportunity for extensive collaboration
  • Stability: which means considering that the foundation of most public APIs was built by tech prodigies. It is safe to assume that your API functions will be stable.

3. Web Services APIs

Essentially, all web services are APIs, as they take a complex stream of code and present it in an organized and easy-to-understand manner. However, all APIs are not web services.

Types of API

1. Open APIs

These APIs are available to the public. While they are secure, the mechanisms can be accessed, added and changed by anyone.

2. Internal APIs

Internal APIs are only available to internal systems. To use this type of API, you need specific rights or licenses.

3. Partner APIs

Partner APIs are not publicly available but like Internal APIs, they are only available to certain groups of users through authentication mechanisms.

4. Composite APIs

Composite APIs combine different data and service APIs. This API type speeds up the process and enhances user interaction. For more information on what is best for API development, read our article with a comparison of GraphQL and REST.

Examples of APIs

Java API

It is composed of elements that help developers establish everyday tasks while increasing productivity.

Twitter API

It lets third-party developers interact with available twitter data and make alterations to the program.


It is Microsoft’s API for managing several tasks in multimedia, programming games and publishing videos. DirectX is composed of:

  • DirectDraw
  • Direct3D
  • DirectSound
  • DirectPlay
  • DirectInput.

API’s role is considerable for many software development companies, which lets them extend capabilities on their web pages, reduce customer churn and increase overall business value.

This article was prepared by the EZtek team. EZtek helps top brands worldwide to innovate and accelerate digital transformation. We provide world-class enterprise software engineering design and technology consulting services.


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