Not paying for down time, dead simple scaling, better service composability. If I was starting from scratch, I'd use serverless. If you're migrating everything

Not paying for down time, dead simple scaling, better service composability. If I was starting from scratch, I'd use serverless. If you're migrating everything, I think that is a giant project that needs justification. I'd ask, "What specific current problem do you have that it would solve?" Cold boot is only a (minor) issue on the first hit, that's quickly amortized.