Hans Smellinckx has 20 years of experience in online marketing, social media, digital marketing, and omni-channel marketing. He references his website, www.onlinemarketingmanager.be, as well as his experience as a consultant, blogger, and speaker at TEDx Flanders. The document discusses the evolution of online marketing and how it involves multiple digital channels, including social media, websites, email, search engine optimization, mobile apps, and more. It emphasizes using data and metrics to personalize marketing across these different channels in an omni-channel approach.