I don't want to dox myself but about a year ago when my employer forgot to notify AWS about switching our production traffic (about 5K rps at that time) from on

I don't want to dox myself but about a year ago when my employer forgot to notify AWS about switching our production traffic (about 5K rps at that time) from one ELB to another we failed requests for several minutes before we decided to just switch back to the old ELB then ask them to do a prewarming before we switched again.