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Learn from real-world mistakes in enterprise Haskell development through this 21-minute conference talk from Lambda Days 2025. Discover the biggest technological regrets from shipping a Haskell enterprise SaaS product over five years, including technologies adopted too early, ideas held onto too long, and decisions that seemed correct initially but proved costly over time. Explore how cognitive biases, industry trends, and over-engineering can lead development teams astray, while developing better instincts for long-term software architecture thinking. Gain insights into avoiding common pitfalls in production Haskell environments through concrete examples of what went wrong and why, helping you make more informed decisions in your own functional programming projects.
