By Pieter Wolters & Frederik Zuiderveen What does the Digital Services Act (DSA) mean for online advertising and adtech (advertising technology)? This blogpost, based on a new research paper, explores that question. The most controversial insight is that ad networks and some other adtech companies must — based on an analysis of the DSA’s definitions — be considered ‘platforms’ in the sense of the DSA. Hence, they must comply with the DSA’s general rules for platforms. ...