Yes, you can distribute an app that was certified by the Microsoft Store via sideloading or through a separate in-house server. If you choose to sideload the app, you will need to ensure that the app is signed with a certificate and that the devices where the app will be installed have the appropriate settings configured to allow sideloading. Additionally, if you want to distribute the app through your company's server, you can do so by manually distributing the app package to devices, provided that it is properly signed and the necessary trust is established on those devices.
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