Rachel,As Geoffey pointed out, it's almost impossible to make a recommendation without knowing the specifics. In fact, as a consultant working in this area among others, I'd find it improper to start naming providers without having looked at requirements.Even if you don't issue a formal RFP in all its bureaucratic glory, you need at least some process to establish requirements and selection criteria, then make a list of potential providers, get information from their sales teams (using a third party if you want to be shielded from the endless sales calls after that), then narrow it down to a few finalists, then do a serious comparison with a small team, then work with your purchasing department and/or lawyer to review the contract (cloud service agreements have a lot of fine print that create specific risks with respect to data protection, cessation of service, etc., etc.)To appreciate all the things you need to consider, I strongly advise you to read the advice you can find in the free white papers from the OMG's Cloud Working Group (full disclosure: I co-chair that group) at www.omg.org/cloud/published-deliverables. In particular, look for the Practical Guide to Cloud Computing, the guide on cloud migration, and the Practical Guide to Cloud Service Agreements.The first of these guides will help you with some absolutely critical questions:1. Do you have a solid business case?2. Do you understand the benefits -- especially that cost isn't really the main issue?3. Do you understand the challenges -- security, privacy, data residency, service agreements?4. Do you have the people to participate actively in the planning and execution of the migration?I hope this helps. I realize I didn't answer your direct question about provider recommendations, but my reply (and Geoffrey's) hopefully showed you that choosing a provider without having considered all the above is a little bit like grabbing a hammer because you think your problem is a nail, without knowing if it is really a nail, how big the nail is, what material you're nailing it into, etc.This being said, congratulations on asking the question in the first place! Feel free to continue the discussion, publicly or privately.