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That being said, being aware of these requirements is primordial before considering Tableau Cloud and the migration, as these will have an impact on the to-be situation.
Tableau Bridge
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Limitations
If Tableau Bridge is to be used, it is recommended to already have everything in place to enable connectivity before starting the actual migration effort. Testing Tableau Bridge ahead of time is usually an effort that takes just a few days, and can prevent future headaches.
File-based data source restrictions
When connecting to file-based data sources (e.g. Excel, CSV, ...), some restrictions apply. Tableau Cloud can natively connect to file-based data sources on cloud-based file hosting services like Dropbox, Google Drive, OneDrive, Box, etc.
However, if you connect to files with Tableau, and these files are hosted elsewhere (specifically on a fileserver or network share on your company network), more restrictions apply. In fact, Tableau Bridge will be required to support connectivity to files hosted there.
For a full overview of Bridge’s supported connectors, see: https://help.tableau.com/current/online/en-us/to_sync_local_data.htmFor details on which scenarios are supported and which scenarios are not supported with Tableau Bridge, see: Tableau Bridge.
Various
A few more important considerations are to be taken into account.
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