Engage!: The Complete Guide for Brands and Businesses to Build, Cultivate, and Measure Success in the New Web is a book by digital analyst Brian Solis.[1][2][3][4] In Engage!, Solis provides an in-depth analysis of social media as a tool used in businesses. He focuses on how to leverage it to be successful in the world of business. In other words, Solis brings forth the tips that people can use to best market their products or services.[5][6]ActorAshton Kutcher wrote the foreword.[7]