Drupal 8 has adopted the Guzzle HTTP client library to replace drupal_http_request(). However, Guzzle is more than just an HTTP client. It's a framework for building web service clients. Guzzle puts all the power of cURL at your fingertips, but with a simple and intuitive interface. Not only is Guzzle a part of Drupal 8, it's also a part of the AWS SDK for PHP and the Goutte library.

Learn how to use Guzzle to create a web service client, and see how features like persistent and parallel connections, service descriptions and commands, and the event-driven plugin system make Guzzle an amazing open source project that should be a permanent part of your PHP tool belt.