What is API?
An Application Program Interface, also known as API, is an interface, which is used by an application program. It is used for communication between an application and operating system or one application and another. Applications transfer information between each other. API contains a group of functions and requirements, that allow an application to access operating system’s or application’s features or data. Every program put into action the API by writing function.
- communication between applications
- web APIs
In this video, the speaker explains what APIs are and why they are needed. APIs, or Application Programming Interfaces, are contracts or protocols that dictate how different software applications communicate with each other. They allow for requests and responses between applications. APIs are necessary because they simplify communication between systems and reduce unnecessary work. The speaker uses analogies to illustrate the concept of APIs, such as changing a dinner reservation or using weather data from existing services. APIs work by using web APIs that deliver requests and responses usually over the internet using JSON or XML. Each API call consists of a server endpoint URL and a request method. The response body varies depending on the request, and it could be the server resource needed by the client or application-specific messages. The speaker also mentions the HTTP error code 404 when a URL is not found. To learn more about APIs, the viewer is encouraged to check out the linked article.
Frequently Asked Questions
How do APIs work?
An API is a set of programming instructions and standards for accessing a Web-based software application. Software companies release their API to the public, so other software developers can design products that are powered by their service.
What is an example of an API?
An example of an API would be the functionality most websites have that allow you to log in using your social media accounts.
Why are APIs important?
There are many reasons why APIs are important such as being able to automate tasks, manage large amounts of data, and retrieve information from remote sources.