Scott Wlaschin's "F# For Fun and Profit" website is a great resource for strongly-typed (yes) data modeling with sum types as a fundamental tool. https://fshar

Scott Wlaschin's "F# For Fun and Profit" website is a great resource for strongly-typed (yes) data modeling with sum types as a fundamental tool. https://fsharpforfunandprofit.com/series/designing-with-types/ https://fsharpforfunandprofit.com/series/designing-with-type... By the third entry in the linked series, we've motivated the use of a sum type with three variants in the example domain model.