With the ever-increasing volume of mobile moments happening each day in the US alone, marketers need automation to deliver against high customer expectations in real time. Vying to help is a new class of vendors: mobile engagement automation. This report helps B2C marketers and digital business professionals understand this emerging landscape and find the right partner based on go-to-market strategies, current capabilities, and sophistication of automation. This is an update of a previously published report; Forrester periodically reviews it and updates it as needed.