When comparing Azure Web Apps vs OwnCloud, the Slant community recommends OwnCloud for most people. In the question“What are the best cloud storage services?” OwnCloud is ranked 14th while Azure Web Apps is ranked 23rd.
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 software
Pro Allows selective sync
Desktop clients offer sync almost as versatile as dropbox.
Pro You have full control with your data
Only chose a provider or host it on your soho-server.
Con Not plug and play as Dropbox etc
You may need some help installing it on your web space, though some providers offer free install server.