I'm looking to move my client's file server, mail, and AutoCad files to the cloud. They currently use public folders to organize and share the CAD drawings. What would be the best solution? Gmail for business or hosted exchange? Should I be using Sharepoint to organize and share the AutoCad drawings or will Google Docs work?
Have you looked at BPOS or the forthcoming Office365? They are hosted exchange, sharepoint and office communications server offerings hosted and managed by Microsoft directly. There are other companies offering similar, or your could go pure cloud with a vm at Amazon.
As for public folders versus SharePoint, the last word I saw from the Exchange team is that for existing publick folder document sharing, "SharePoint may be a better option."
Or just move email out to a service, and buy a cheap big dumb NAS for the AutoCAD files (and any other local shared storage needs.) NAS devices need much less maintenance than a Windows server.