Tom Mosterd, Community Manager Coordinator - DOAB Foundation, Open Access Books Network As Scholarly Communications is amidst a transition to Open Science – resulting in the more widespread availability of open content, data and infrastructure - the scientific community itself become increasingly adept at engaging with 'open'. Two examples of 'open infrastructure services' are the Directory of Open Access Books (DOAB) and the OAPEN Library – both running on an open source version of DSpace with its metadata freely available under CC 0. The Directory of Open Access Books (DOAB) indexes over 60,000 open access books, whereas the OAPEN Library provides a structured and premium hosting environment for over 25,000 OA books. In practice, how are these open infrastructures being used? What workflows, services and use-cases have been built on top of these open platforms by its community? In this Lighting Talk we will highlight several practical examples of workflows that have been established by librarians, service providers and other stakeholders that tap into this open service: how they use this to their local benefit, how having an open infrastructure service enables this, and invite others to think creatively about how to make the most use of these types of services – now and in future as they continue to grow