After careful thinking and asking on meta.stackoverflow, I'm posting this question on the DBA site. If anyone thinks this question should be on serverfault or any other site, feel free to close and migrate it.
We have a couple of self managed servers, production and development, with some not too big databases on a MS SQL Server 2008R2 express instance. Also we have some other databases hosted on the Amazon RDS service and a couple of web sites too. I've been asked to investigate the option of migrating all the production & development databases to Amazon AWS. Also check the viability of using EC2. Sorry if I'm miss using some terms, I'm just learning about all these services.
Where should I start doing some tests, maybe creating a dummy database to test the different configurations, compatibility issues, latencies, etc? Can I have some recommendation on tutorial/blog/faq's where to find some usefull information? I already opened an account on the "free tier" that Amazon offers for testing purposes and I'm reading everything I can find on the subject, other than the AWS Documentation site.
Any recommendation will be welcomed as well as any previous experience doing this kind of migration to the AWS. I'm willing to add to my question any information that could help to clarify it.