These were the slides for my talk "Why [corporations and SMEs] cooperate with startups?" in the Startup Week Düsseldorf program at Startplatz DUS on April 11th 2019. The talk aimed to offer an overview of the motivations for cooperating with startups, some real-life examples, and what actions you can take depending on your goals. For inquiries, contact [email protected] (This presentation also contains extra content with more information about why corporate M&As often fail and what to do about it.)