Lecture on digital transformation for students of the Artevelde University College in Ghent, Belgium. The internet has been around for 25 years and has caused many disruptions. With more disruptions to come, many organizations are seeking for ways to use digital opportunities in a meaningful way creating more value for customers and sustaining their business. The impact of the development of the Web on marketing and communications and how it causes digital disruption for companies is shown in this talk. With practical examples you will get insights in how organizations can create more value for customers at the same time also the organization can benefit from these efforts. Several digital developments such as mobile, social and 'internet of things' will be presented. Besides the use of theoretical models for digital disruption and digital transformation, some case studies are presented which bring directly applicable tips to take home. Principles for digital transformation are a changing value proposition, business model, culture, technology and organization.