This table is just a quick comparison for the types of services that the major cloud providers offer as of the posting date. This is by no means a comprehensive comparison, as I am sure there are other providers and types of services I’m not listing. And I’m not being feature or platform specific either. For instance I realize that Google’s App Engine and Windows Azure don’t allow for the same development platforms. But they do provide a similar service at a high level. Also I’m sure the features for each category vary by provider.
| Microsoft | Amazon | Rackspace | ||
|---|---|---|---|---|
| App Platform | Azure | App Engine | Cloud Sites | |
| Relational DB | SQLAzure | RDS | Cloud Sites | |
| Blob Storage | Azure | S3 | App Engine | Cloud Files |
| Table Storage | Azure | SimpleDB | App Engine | |
| Pure VM | planned | EC2 | Cloud Servers | |
| CDN | Azure CDN | Cloudfront | Cloud Files | |
| Queue | Azure | SQS | App Engine | |
| On-Premise | planned | App Engine | Open Stack |
