In Season 4, Episode 44, Karl and Jon are joined by Tech Lead for the Developer Experience team at AWS,  Brian Beach. They discuss Introduction to Kiro, AWS's new AI coding assistant, Spec-driven development and its benefits, property-based testing in Kiro, MCP support and agent hooks in Kiro, upcoming AWS re:Invent conference and developer tools track, Kiro-related events and challenges at re:Invent and the guys spent a lot of time discussing which sport has the best ball for reliving plantar fasciitis symptoms...   00:00 - Intros 09:51 - Kiro General Availability Kiro, AWS's AI coding assistant, has recently gone into general availability. It offers a spec-driven development approach, allowing developers to create requirements, technical designs, and task lists before generating code. This process helps reduce technical debt and improves code quality. Kiro also introduces property-based testing, which automates the testing process and helps ensure code correctness. Specification-driven development & Property Based Development 46:34 - Agent Hooks 48:20 - Kiro at re:Invent 2025 The upcoming AWS re:Invent conference will feature about 75 sessions in the developer tools track. There will be various Kiro-related events, including a "House of Kiro" experience, kiosks in the AWS village, and a builder's loft at Mandalay Bay. A Kiro-themed hackathon with significant prizes will also take place during the conference.