I am planning to publish my SharePoint provider-hosted app on Microsoft Azure. I have an Office E3 license. Do I need to pay for publishing this app to Azure?
And If yes, then how much do I need to pay?
Provider hosted app will be hosted in azure as a web app (app services) which offers a free tier. If the load increases you might need to scale it up to either shared, basic, standard or even premium. to get an indicative cost use azure price calculator at https://azure.microsoft.com/en-us/pricing/calculator/