Until December 31st, 2019 Microsoft offers a discount of 66% on Microsoft Azure App Service on Linux. Microsoft Azure App Service is a fully managed compute platform that is optimized for hosting websites and web applications. Customers can use Microsoft App Service on Linux to host web apps natively on Linux for supported application stacks.
This offer is available in the licensing programs according to the categories.
For more information on Microsoft Azure App Service on Linux, please visit: https://docs.microsoft.com/en-us/azure/app-service/containers/app-service-linux-intro.
To compare the different Microsoft App Service Plans, please find the table on this site: https://azure.microsoft.com/en-us/pricing/details/app-service/plans/.