Learning Objectives

By the end of this chapter, I should be able to:

• Explain what HTTP and HTTPS are.
• Understand the evolution of HTTP from HTTP/0.9 to HTTP/3.
• Describe how clients and servers communicate using the HTTP protocol.
• Differentiate between HTTP and HTTPS.
• Understand all major HTTP request methods.
• Interpret HTTP response status codes.
• Explain HTTP headers and their purpose.
• Understand cookies and sessions.
• Explain persistent connections (Keep-Alive).
• Compare HTTP/1.1, HTTP/2, and HTTP/3.
• Understand REST fundamentals.
• Apply HTTP concepts to real-world DevOps and Cloud environments.
• Troubleshoot common HTTP-related issues.

Introduction

Every time you:

• Open Google
• Visit Amazon