GitHub Copilot has evolved from a simple autocomplete tool to a comprehensive AI coding assistant that enhances software development processes by integrating features like mission control and agent mode within VS Code or GitHub. It now facilitates multi-step workflows, test generation, pull request reviews, and code shipping while offering capabilities such as cross-file reasoning and the ability to choose different models optimized for speed or reasoning. The tool's suite includes mission control for managing tasks, an agent mode that defines outcomes and seeks user feedback, a CLI for repository exploration, and a coding agent for asynchronous task automation. Copilot's code review feature highlights risky code changes and suggests improvements, promoting faster feedback loops and fewer regressions. By emphasizing best practices, such as reviewing AI-generated code and maintaining context limits, Copilot aims to improve efficiency and reliability for developers, especially with its seamless integration into existing workflows.