Customer Data Platforms are the top investment priority for e-commerce marketers, with 65% planning to increase spend in 2019. This from a study by Oracle and the CommerceNext conference. Bad news is that unified customer data is also the most disappointing of 2018 investments, with 52% saying results fell below expectations. Personalization and omni-channel marketing were almost as disappointing, at 51% and 47%. This stuff is hard.