I've been involved in multiple migrations to public cloud infrastructure (some were unnecessary, but such are the trends...), and without failure, the 12 factor

I've been involved in multiple migrations to public cloud infrastructure (some were unnecessary, but such are the trends...), and without failure, the 12 factors manifesto shows up in the very first days of the discussions as the first target to reach before anything else is doable. I very much enjoy it and I'm glad whether I see someone mention it or I can spread and teach its wisdom.