What does Exact Data Match (EDM) do in Zscaler DLP?

Exact Data Match (EDM) in Zscaler DLP is a feature that specifically matches exact pieces of data from a customer's structured data. This process involves comparing data elements within the DLP policies to identify and help protect sensitive information. By using EDM, organizations can effectively trigger Data Loss Prevention policies based on specific matching criteria, ensuring that sensitive data is adequately monitored and controlled.

The functionality of EDM is particularly critical in environments where precise data identification is necessary, such as in compliance with various regulatory requirements. This allows organizations to enforce policies around sensitive data handling without false positives, enhancing the efficiency and accuracy of DLP efforts.

The other options concern functionalities that do not align with the core purpose of EDM. For instance, compressing data for storage efficiency, encrypting files during transfer, or categorizing email traffic are unrelated functions that do not represent the matching capabilities of the EDM feature. Thus, focusing on the direct matching of specific data elements makes B the accurate representation of what EDM does in the context of Zscaler DLP.