Comment by lynndotpy

Huh, this sounds exactly like what they had been doing with the OfficeClickToRun.exe, which would update in the background and keep parts of Office preloaded so it would launch quickly.

I can't find anything explaining what differs between this, but I can find people comparing Edge's "Startup Boost" feature of the same name to the long-standing OfficeClickToRun.exe ( e.g. here https://forum.falcon-bms.com/topic/22778/bms-crashes-after-t... )

I haven't used Windows in three years or Office in seven so it's possible they removed OfficeClickToRun.exe since 2022 and are reintroducing it.