Open and Agile Smart Cities & Communities (OASC) is a global network of cities and communities that assists local administrations of all sizes in their digital transformation. OASC works with its members, partners and independent experts to create sustainable impact for communities via their digital tools and systems. The network focuses on interoperability, or how to combine datasets from different sources. This facilitates the seamless sharing and re-use of digital, data-driven solutions and helps to avoid vendor lock-in, to reduce costs and resources and improve efficiency. This is done via open standards (Minimal Interoperability Mechanisms) and APIs (application programming interfaces).