There is plenty of commentary online about how AI will replace coding as we know it in the future. There’s huge amounts of prediction about what the future holds.1 But I haven’t come across many case studies of rolling out the tools that exist today. So here’s some observations.For context: SaaS product. Ruby on Rails. Mature (12 years) codebase, in good condition. About 40 developers.We’ve given every developer the option to buy Cursor or Claude Code. (I’ll refer to these as Agents for the rest...