Data Management Platforms (DMPs) came on the scene a few years ago and are seen by many as the savior of marketing. Here, they say, we can have the “golden record” for our customers. In the DMP, vendors promise that you can collect all the information you need for a 360-degree view of the customer. The only problem — it’s just not true. Gartner defines a DMP as Software that ingests data from multiple sources