ARIADNE is an EU-funded project that aims to facilitate sharing of archaeological datasets across Europe. The document discusses open data publication requirements, good practices, and benefits. It notes barriers to open data sharing include lack of incentives and effort required. Survey results presented on current limited sharing behavior. The benefits of open data publication are described, including increased citations and recognition for data providers. Proper preparation and documentation of datasets is important for others to find and reuse the data. Widespread open data sharing could enable new collaborative and data-driven research.