Designing digital strategies used to be about optimizing one or some few company websites. However, as digital channels are evolving and more interaction with consumers is taking place online, companies have to focus on building strategic ecosystems with products and services that support each other. Nike, Apple and Google are renowned for having built such successful ecosystems. But ecosystem thinking is not only useful for large, global companies. In projects of any scale, design teams can benefit from this approach. In my presentation, I will explain practical tools for using ecosystem thinking to design strategies that can leverage business opportunities across various platforms.