Maintaining software is a constant reality, not an exception. As codebases grow and evolve, they inevitably collect patches, workarounds, and tech debt, making it harder to maintain, scale, and innovate. Production systems are like living organisms - they never stand still, and what starts as minor issues can quickly snowball into significant challenges.

In this talk, I'll take you through real-world modernization projects where we leveraged serverless technologies to tame aging codebases back into shape. Expect to hear about practical techniques and patterns that extend beyond the basics. I'll share how we navigated challenges, achieved wins, and applied patterns like Event-Driven Architecture and Domain-Driven Design in real production environments. Whether you're exploring a serverless shift or simply looking to breathe new life into a legacy system, you'll walk away with actionable insights to help you on your own modernization journey.