SE_SFRetrieve function in Amazon Connect can be used to retrieve Salesforce record.

You can use the Salesforce retrieve API to fetch a record from the server by id using “Retrieve Salesforce Record” block.
Reference Article:
https://amazon-connect.github.io/amazon-connect-salesforce-cti/docs/lightning/release-notes/

You can find more information from the above article.

Note:
It uses Salesforce API to fetch the record.