IMO Agile is the best fit for internal/in-house Enterprise SW development, not for commercial or open source SW products. I don't think it's a good idea to use

IMO Agile is the best fit for internal/in-house Enterprise SW development, not for commercial or open source SW products. I don't think it's a good idea to use pure Agile for mission-critical SW. It should be at least partially waterfall - i.e. more formal specs and designs upfront. -- Five Worlds https://www.joelonsoftware.com/2002/05/06/five-worlds/ https://www.joelonsoftware.com/2002/05/06/five-worlds/