This essay provides insights into a publisher’s perspective on implementing and evaluating SeamlessAccess, a collaborative initiative that facilitates seamless access to scholarly resources subscribed by libraries. The essay outlines the motivations behind adopting SeamlessAccess, including the surge in federated authentication usage during the pandemic, its adoption by other publishers, and considerations regarding security and privacy. It discusses IEEE’s decision to employ a hybrid approach, combining the advantages of SeamlessAccess with its own solutions to maximize flexibility. The essay also highlights pilot projects focused on incorporating Identity Providers (IDPs) and EZproxy login URLs into the discovery process, along with strategies employed to monitor and assess the implementation of SeamlessAccess. By utilizing data, the essay demonstrates the overall success of the SeamlessAccess implementation project, while acknowledging potential obstacles that publishers and libraries may encounter during integration. Furthermore, the essay emphasizes the importance of increased collaboration between publishers and libraries to fully realize the vision of federated authentication as a genuinely seamless experience for researchers.