Systems Manager can be used to deploy apps to all of your managed devices through the MDM > Apps page. For free apps, you can add the app directly to the list by clicking Add new, selecting the app type, and searching for the app's name.
For paid iOS apps, you will follow the same process, but will need to add in an Apple redemption code purchased via the Apple Volume Purchase program (https://vpp.itunes.apple.com).
Things to note for the Apple Volume Purchase program:
For more information about VPP app deployment and licensing, please refer to our documentation on Apple's Volume Purchase Program.
You can adjust this app to either be pushed to devices with any tag or a specific tag.
Selecting this check-box will force the app to be uninstalled when the Meraki management profile is uninstalled. This is important to have checked if you want to ensure that the apps you select are only available to those mobile devices that are managed by Systems Manager.
Selecting this check-box will prevent app-generated data from being backed-up during a sync. This is important for administrators who want to separate personal from organizational/corporate data on an iOS device.