App Store Connect
It covers TestFlight, product pages, review submissions, pricing, in-app purchases, finance, and App Analytics.
Why use it
The official path from tester distribution to release is consolidated into one Apple publishing workspace.
Where it fits
Prepare the store page, distribution, press assets, community, and localization needed to reach the right players.
What to check
Public distribution generally requires annual membership; plan ahead for signing, privacy declarations, review, and organization checks.