We have Office 365 E3 in our organisation, and I'd like to learn more about PowerApps, with a view of using it to create a relatively simple but large (50,000 entries) database of user details.
Where does PowerApps hold its data? I've read up on Common Data Service, but I've read that an extra licence is needed for this. Is this only for those who build/maintain the app, or for all the users as well?
Could the 50,000 customers be created as some kind of contacts within Exchange Online that that I can sent emails to these customers?
Can anyone shed light on what I would need licensing-wise to achieve the achieve the above?