The process to distribute an iOS app internally is:   a. For Internal testing of an iOS application, we use .ipa files.   b. Before building iPA we add the user/tester/dev’s UUID to Apple Developer Account.   c. As the next step after archiving, we select ‘Development’ in Xocde as the distribution setting. As an output, it provides a .ipa file, which can be installed in the registered UUID devices.   d. For installing iPA in iPhone there are multiple tools available. As a leading iOS app development company,  BigOh uses Diwai to generate installable links, for best results.