Hi Fernando,
1. The first time you start SAM, you must request a registration key by submitting your email address to a secure server at NREL (this is done via
developer.nrel.gov) to request a registration key. After you register, each time you start SAM, it connects to the sames server to verify your key. You can read more about that in Help: See "Your personal data and SAM" in the "Registration" topic under "Reference" in the Table of contents. There is also information here:
sam.nrel.gov/forum/forum-general/1046.
SAM also connects with a few web APIs to download data in text format such as weather files, electricity rate data, and power price data. SAM submits an API key to make those requests, which result in a file being downloaded from the API to your computer that SAM can then read. You can find a list of the URLs SAM uses in the "Web Access and Proxies" topic of Help (also under "Reference" in the table of contents).
2. SAM does not synchronize any data with 3rd party cloud services.
Best regards,
Paul.