An introduction to Claude Code — what it is, how it works, and why it is transforming software development.
Welcome to Claude Code 101! In this lesson, we will explore what Claude Code is and why it has become one of the most powerful AI coding assistants available today. Claude Code is an AI-powered coding agent built by Anthropic. Unlike simple autocomplete tools, Claude can understand entire codebases, reason about architecture decisions, write tests, debug complex issues, and even refactor large portions of code. What makes Claude special is its long context window — it can hold up to 200,000 tokens of code in memory, meaning it understands your entire project, not just the current file. By the end of this course, you will know how to leverage Claude for everyday coding tasks and boost your productivity by 3-5x.