Postman API Testing | Step by Step for Beginners

Define web services and illustrate how they enable platform-independent, client–server communication over the web using standard formats.

Explore how web services enable two applications to communicate over the internet, with a service provider and a client, using soap or rest and formats like xml.

Learn the basics of web services: WSDL, a machine-readable interface describing a service's attributes and operations, and UDDI, an online registry for publishing and discovering descriptions.

Resolve 401 unauthorized errors in ReqRes APIs by adding the required API key header in Postman, including obtaining the free API key and applying the header to requests.

Master your first api request in postman by performing a get request, saving it to a collection, and reviewing the endpoint, headers, and a 200 response.

Learn how to create a post request in Postman to create a user, including setting the endpoint, the request body, content type, and analyzing the response.

Learn to run a put request in Postman to update user resource at /users/82 with a json payload, include content-type and authorization headers, and save the request as an example.

Learn how to create a patch request in postman to perform partial updates, send a payload to a resource endpoint, and view a successful 200 response.

Learn to create and send a delete request in Postman, remove a server resource, and verify a 2xx no-content response while saving to a collection and reviewing history.

Create and manage Postman environments by defining endpoint, email, and password variables, switch between QA, regression, sandbox, and production, and share, duplicate, or delete environments as needed.