A customer data platform (CDP) is a type of packaged software which creates a persistent, unified customer database that is accessible to other systems. Data is pulled from multiple sources, cleaned and combined to create a single customer profile. This structured data is then made available to other marketing systems. According to Gartner, customer data platforms have evolved from a variety of mature markets, "including multichannel campaign management, tag management and data integration."The CDP market is currently a $300 million industry and projected to reach $1 billion by 2019.