# Full data migration - Import data from `Amazon S3` to `TiDB Cloud`

![`smart`](./student-guide/diagram/ImportData5_aa_001_20230718.png)

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`TiDB Cloud` starts validating whether it can access your data in the specified bucket URI. After validation, `TiDB Cloud` tries to scan all the files in the data source using the default file naming pattern, and returns a scan summary result on the left side of the next page. If you get the AccessDenied error, see https://docs.pingcap.com/tidbcloud/troubleshoot-import-access-denied-error
Step 3. Click Start `Import`.