When comparing Azure Web Apps vs Back4App, the Slant community recommends Back4App for most people. In the question“What are the best hosting services for Node.js apps?” Back4App is ranked 3rd while Azure Web Apps is ranked 6th. The most important reason people chose Back4App is:
The user is not a hostage and can migrate the application to other hosting service whenever they want.
Ranked in these QuestionsQuestion Ranking
Pro 10 free web apps in each datacenter
There's a free plan which provides you with up to 10 free apps hosted on each datacenter, albeit with some restrictions on hard disk size, CPU and RAM.
Pro Easily scale up and down
It's very easy to scale up or down your app in Azure. You can either scale the CPU or RAM according to your needs. There's even an option for autoscaling which lets Azure itself choose when to scale up or down depending on traffic.
Pro Open source
Back4app is an open source BAAS and Backend generator.
Pro Smooth migration from Parse
Back4App offers a smooth migration for all former Parse users who wish to migrate their data now that Parse has announced that it will stop soon.
Con Uses MongoDB for the backend, which is not considered very safe by many
Back4App uses MongoDB as the database where data is stored. Mongo has been known to have issues with data corruption and data loss.