Glossary: Shipping to the App Stores
Internal and external testers
Also written: internal testers, external testers, internal testing, Public link
On TestFlight, internal testers are your App Store Connect team (up to 100, no review) and external testers are anyone else (up to 10,000, after Beta App Review), invited by email or a public link anyone can open. Play's internal track also holds up to 100.