API is the acronym for Application Programming  Interface, which is  a software  intermediary that allows two applications to talk to each other. Each time you an app like Facebook, send an instant message, or check  the weather on your phone, your’re using an API.

What is Webservice?

What is HTTP?

Hypertext Transfer Protocol

1. Communication between client computers and web servers is done by sending HTTP Requests and receiving HTTP Response.
2. Clients are often browsers (Chrome, Edge, Safari), but they can be any type of program or device.
3. Servers  are most often Computers in the cloud .

HTTP Request / Response

Communication between clients and servers is done by requests and responses

1. Client a browser sends an HTTP request to the web
2. Web server receives the request.
3. The server runs an application to process the request
4. The server returns an HTTP response  (output) to the browser

HTTP Status Codes

What is XML?

XML is extensible markup language, so it is a markup language like HTML.

API Testing Using Postman

API TESTING is a  software testing type that validates application programming interface API.

The Purpose of API testing  is to check the functionality, reliability, performance, and security of the programming interfaces. In API Testing  instead  of using standard user  inputs keyboard and outputs you use software to send call to the API, get output, and note down the system’s response.

API test are very different from GUI tests and won’t concentrate on the look and feel of an application. It is mainly concentrates on the business logic layer of the software architecture.

Thanks for Reading ..