Or, since we're talking about adding tooling for better efficiency - just update the source code, and let the tooling build and deploy! :) Automatic (and safe,

Or, since we're talking about adding tooling for better efficiency - just update the source code, and let the tooling build and deploy! :) Automatic (and safe, obviously) production cutover is still kind of a holy grail, but it's definitely doable, and being done as we speak by a number of pretty neat companies.