Many of the cloud computing services offer some kind of free tier these days. Most of them are time-limited (e.g., Amazon's free tier lasts for 1 year, Microsoft's 90 days), but some are not including Google. How do they stack up?
Cloud providers vary greatly and so do their plans. Generally, the IaaS players have to offer more because you would be running an entire system image on their nodes whereas the PaaS providers can get away with a lot less, and still enable you to at least bootstrap a development version of your webapp. Because of this, one cannot compare, say, Amazon's 10 GB of EBS with Heroku's 5 MB of shared DB storage because in Amazon's case, you'll have to load a lot more of your infrastructure software into that 10 GB.
| Service | Storage (GB) | Bandwidth | Time | Source |
|---|---|---|---|---|
| Google App Engine | 5 (blob) 1 (high replication) | 1 in/1 out daily 56 MB/min 14,400 max | Official Quotas | |
| Amazon Web Services | 10 EBS 5 S3 1 SimpleDB | 15 out/month | 750 | Free Tier |
| Microsoft Azure | 1 DB 20 Storage | 20 out | 750 * 3 mos | Free Trial Page |
| Heroku | 0.005 | 750 hrs | Pricing | |
| DotCloud | 0.01 disk 0.01 RAM | Pricing FAQ | ||
| EngineYard | 500 hrs | Pricing | ||
| DuoStack |
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