Thoran Rodrigues updates his comparison of some of the top IaaS providers, including categories of cost, scalability, ease of migration, reliability, and security.
Cloud Promises: Scalability and Automation / Choice and Flexibility
User Concerns: Security / Migration / Reliability
It seems as if every time I do this comparison, the results improve. The information available about the different providers improves – their websites have improved, and so on. I believe this marks an evolution in the market, especially increased competition, which has led to better availability of information.
Once again, there is a wide variation in price ranges, from under US$ 50 to over US$ 180. There was, however, a widespread reduction in prices. This is evidence of two factors: the increased competition in this space, as well as economies of scale that large IaaS providers enjoy and that they can give back to their customers.
A couple more interesting trends are that most providers are now offering both “scale-up” and “scale-out” features, that is, the ability to dynamically increase storage, RAM and CPUs on a single server, as well as the ability to easily clone servers based on predetermined images. This is the natural evolution in this market, since this scalability is one of the greatest cloud promises. Following this trend is the way that many providers are now allowing customers to build entirely customizable cloud servers in terms of resources, opposed to the fixed instance types that Amazon and Rackspace adopt.
Finally, I’m also seeing many providers basing their solutions on VMware technology and allowing customers to upload their own images to the cloud, which can be a very interesting possibility, especially for enterprise customers.Once again, this comparison is far from authoritative, but it’s meant to serve as a good starting point for anyone trying to easily see the similarities and differences between cloud providers. This can help both the newcomers to the cloud as well as people looking to change their current provider. It was based on information publicly available on the web site of the providers, so there might be variations contracts for specific customers.