Scenario: A financial institution needs to ensure secure transmission of customer data between its branches. Which aspect of data encryption should they focus on to achieve this?

End-to-end encryption ensures that data is securely transmitted from the source to the destination, protecting it from interception or tampering during transit. This is crucial for a financial institution dealing with sensitive customer data, as it ensures that data remains confidential and integral throughout its journey between branches. Understanding the importance of end-to-end encryption helps organizations implement robust security measures to safeguard data during transmission.