What does the HttpRequest class do?

The HttpRequest class serves to define an HTTP request and includes various request types such as GET, POST, DELETE, and PUT. This class encompasses the ability to specify all components of the request, including the HTTP method, endpoint URL, headers, and body content. By using the HttpRequest class, developers can customize HTTP requests programmatically, automate interactions with web services, and manage data exchanges effectively between Salesforce and other external systems.

By specifying the request method (like GET for retrieving data or POST for submitting data), developers can control how Salesforce communicates with external APIs. This functionality is essential for integration scenarios where Salesforce needs to send or receive data over the internet, making the HttpRequest class a fundamental component for building integrations in Salesforce.