The author attempted to build their startup entirely on European infrastructure, motivated by data sovereignty, GDPR simplicity, and a desire to support EU companies. They chose a stack including Hetzner, Scaleway, Bunny.net, and Nebius, and self-hosted several services. The author encountered challenges, such as finding a suitable transactional email provider and dealing with domain TLD pricing disparities. Despite these difficulties, they consider the effort worthwhile for the benefits of lower infrastructure costs and a clean data residency story.