[StilesCrisis]

Much like contracts--yes, C++ needs something modules-like, but the actual design as standardized is not usable.

Once big companies like Google started pulling out of the committee, they lost their connection to reality and now they're standardizing things that either can't be implemented or no one wants as specced.

[pjmlp]

Usable enough for Office, and the initial proposal was done by Microsoft.

[StilesCrisis]

I know Microsoft invested a lot into modules development and migrated a few small pieces of Office onto modules, but I'm not sure if they are actually using it extensively, and I'm also not sure if they're actually all that beneficial. Every time I hear about modules, it's stories about a year of migration work for a single-digit build-time improvement.