API, short for Application Programming Interface explains the interactions between different software intermediaries. This interface has the capability to take on a few different forms, based on whether one is developing a game, a mobile application, or a website.

In other words, an API is a set of protocols and definitions that enable two applications to communicate with one another. It is an intermediary layer that is an essential part of the application and web design, as it has intertwined itself within the digital fabric of each use for code, from Java code to Ruby on Rails.

How To Use an API?

There are various uses for the API, and you do not need to be a developer to be able to use an API. While IT developers use APIs to link the functions of their platforms and sites, everyone else uses APIs for connecting to social media, sending an email, and texts, making payments through Venmo, Google Pay, or PayPal or Venmo, booking a flight online, or also to check the weather. However, API goes beyond basic daily applications, too, thus, enabling online banking and companies’ security, such as Tesla to update the software in their cars safely.

Different Types of APIs

Following are the different types of APIs:

  • Open APIs: These are also called Public APIs, and these have no restrictions and can be created by multiple developers over time. The general public can access these APIs. While they are secure, the mechanisms can be accessed, added, and also modified by anyone.
  • Internal APIs: Internal APIs or private APIs are available only to internal systems. To be able to use this kind of API, one requires specific licenses or rights. These APIs are typically well-guarded behind company protocols and firewalls, as they comprise crucial company information that is not available for public consumption.
  • Partner APIs: Partners APIs are used to interact with business partners. These APIs are not are only available to certain groups of users through authorization and authentication mechanisms. However, these APIs function outside the organization and thus require extra security measures.
  • Composite APIs: Composite APIs combine various data and service APIs to build the result that a developer requires. These APIs run together in sequence due to the execution and are not triggered by one single task. This API type speeds up the process and improves user interaction.

Why is an API Used

An API comprises various functions that enable applications to handle software contents and data. APIs can access operations systems, external data, as well as microservices.

The API extracts the data within the database of a physical server. It carries a request to be able to obtain whatever you require.

For example, you can submit proposals to the server when you enter a URL into a browser to check a webpage. The server then displays all the data that you require based on the search query. One can execute further action by interacting with the website. Following are a few examples of APIs:

  • Java API: A Java API comprises elements that help developers set up everyday tasks while enhancing productivity. It is “out of the box” components that make up the Java Development kit.
  • Twitter API: Twitter launched its web API based on JSON. This API lets third-party developers communicate with the available Twitter data and make modifications to the program.
  • DirectX: This is Microsoft’s API for handling several tasks in programming games, multimedia, and publishing videos. This API design can access multiple functionalities on a graphics accelerator card available across different Microsoft platforms.


APIs’ role is essential for numerous software development companies, which lets them extend capabilities on their web pages, decrease customer churn and also increase the overall business value. This is why it is crucial to choose suitable APIs to be able to make the most of them.

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