/System/Library/PrivateFrameworks/DataDetectors.framework/Versions/A/XPCServices/DataDetectorsActionService.xpc/Contents/MacOS/DataDetectorsActionService Apps like Mail and TextEdit can recognize commonly used bits of information in your text: a physical address, a phone number, a date and time, etc. With a click, user can send that information into the appropriate program, like Calendar, Contacts, or your Web browser (for looking up an address on a map). This is what the DataDetectorsActionService is used for.
The binary is a part of DataDetectors private framework.