When comparing dotCloud vs Azure Web Apps, the Slant community recommends dotCloud for most people. In the question“What are the best hosting services for Node.js apps?” dotCloud is ranked 5th while Azure Web Apps is ranked 7th. The most important reason people chose dotCloud is:
Most other PaaS providers only allow for multiple, low-memory instances for horizontal scaling, but dotCloud also allows for vertical scaling and resource-heavy applications by adjusting per-instance memory availability.
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Pros
Pro Adjust per-instance memory
Most other PaaS providers only allow for multiple, low-memory instances for horizontal scaling, but dotCloud also allows for vertical scaling and resource-heavy applications by adjusting per-instance memory availability.
Pro Quick deployment
dotCloud is usually very fast when it comes to deploying your project. The CLI tool is very good at that and deploys your build almost as soon as you push it.
Pro Thorough Documentation
The documentation is very good an explains everything in-depth.
Pro Support for various types of databases
Supports Postgres, MongoDB, RabbitMQ, Redis, and MySQL. All of these can be used without any additional pricing, no need to pay for expensive addons.
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.
Cons
Con Poor database performance
When your databases have a very high write volume dotCloud starts having some serious problems keeping up with it. Performance drops completely and in the worst case scenario the database crashes and starts going down daily.