You Can Now Install—and Update—Microsoft Store Apps Using the Command Line

By typing simple, text-based commands into Windows' PowerShell, you can quickly install apps directly from the Microsoft ...

Microsoft Store Command-Line Interface lets you install and update app

Use Microsoft Store Command-Line Interface (CLI) on Terminal with commands like store browse-apps, store install, store update, etc to install, update and manage apps.
ZDNet

Microsoft's Windows Update to include third-party apps - now that's a game changer

Using Windows Runtime (WinRT) APIs and PowerShell commands, the process lets third parties integrate their app's installers or management tools into Windows Update. The first step will be to register ...