In this interview, PromptLayer founder Jared Zoneraich walks through a modern workflow for building production-grade LLM apps: version every prompt, run automated evals and cost checks, trace live traffic, and build regression sets that domain experts can tweak in a no-code editor. We’ll dissect real failure stories, tooling patterns, and team rituals that turn fragile prototypes into dependable AI agents powering customer-facing products.