In earlier lessons, I mentioned how smart and mobile devices have profoundly impacted human lives, in general. In digital marketing, more specifically. According to Salesforce, 68% of the companies have integrated mobile marketing into their overall marketing strategy. And 71% of marketers believe mobile marketing is core to their business. In this lesson, I'll focus on three key questions, and we'll take a closer look at mobile marketing. First, we'll ask, what is mobile marketing? And second, what are the channels and key features of mobile marketing? And third, what are the advantages and limitations of mobile marketing? Let's begin with the basic concept of mobile marketing. As in the case of many emerging industries and practices, there is no clear and agreed upon definition to mark the boundaries of mobile marketing. But there is a definition that I think that captures the essence of this concept. According to Marketo, a leader in m...