Any discussion of the features and functionality of ESPs vs. CDPs needs to start with the ESP platforms. ESPs have been around in one form or another for over 20 years, and it should be well-estalbished these days as to what constitutes an ESP. Ah, if only it were so easy....

Every once in a while, during our careers, we get to do something truly exciting. Launch a new product. Solve a business problem in a novel way. Build a new system. On rare occasions, we get to do all these things at once. This is one of those stories. These situations...