About 3/4 of the way through the launch now. All of the preparation is done that can be done pre-cutover, so just need to wait 4 hours to do the actual switch and make the live system the driver for the back-end.

The new system is running happily with the tagged code. A few minor deployment issues have shown up, but nothing one wouldn't expect in such a large system that integrates with legacy code.

Anyway, going to take a break for a bit and then do some more testing on the new system before the mid-night clock runs out.