Explore the practical applications and benefits of OCaml in real-world systems through this 46-minute conference talk from YOW! Australia 2023. Discover why OCaml is a compelling choice for your next project as Tim McGilchrist, Principal Software Engineer at Tarides, shares his experience in designing, implementing, and delivering OCaml-based solutions. Learn about engineering design elements, solution trade-offs, innovation budget allocation, and non-technical factors crucial to project success. Gain insights into OCaml's features, its usage in industry, and how statically typed functional programming languages approach coding. Delve into case studies on language interoperability and front-end extension, and understand the advantages of type-driven development, fearless refactoring, and programming at scale. Conclude with a retrospective on OCaml usage and valuable resources for further exploration.