This talk focuses on dependency management in PHP projects using Composer. The speaker discusses how Composer has evolved from a simple PHP package installer to a critical piece of infrastructure. He covers best practices for managing dependencies, handling updates safely, dealing with compatibility issues, and mitigating risks associated with third-party dependencies. The talk emphasizes the importance of proper version control, change management, and business considerations when dealing with dependencies.

A detailed talk about Composer package management by one of its core developers. The speaker discusses common misconceptions about Composer, explains the differences between install and update commands, introduces the global command functionality, and provides troubleshooting tips. The talk also covers package versioning, dependency management, and best practices like committing the composer.lock file.