This final report is the third and final deliverable of Work Package 3. It builds on the first report D3.1, in which the outcomes of the initial ARIADNE project as well as the PARTHENOS project, which were used as starting points for the current ARIADNEplus project, were taken into account [Hollander 2020]. It also builds on the second, interim report D3.2, in which the activities of the partners to support the creation of FAIR data in the archaeological sector were described [Hollander 2022]. This current report summarises the activities carried out by the different partners during the four-year project duration (January 2019 – December 2022), as well as the results achieved through the work package. The following partners have been involved: DANS-KNAW, PIN, UoY-ADS, CNR, CONICET, BUP, NIAM-BAS, AMZ, ARUP, AU, UH, CNRS, INRAP, RGK, ATHENA-RC, PP, HNM, FI, IAA, MIBACT-ICCU, NARA, DGCP, SND, and ASU. The objectives of Work Package 3 “Policies and Good Practices for FAIR Data Management” are to: Support the creation of FAIR data in the archaeological sector. Define and spread guidelines to good practices in archaeological data management. Adapt standard quality criteria for datasets and data to the archaeological case, and support their implementation among users. Chapter 2 describes how to define and disseminate guidelines on good practices in archaeological data management. Commonly developed and widely applicable guides ensure that archaeological data will be FAIR and available in the long-term. Chapter 3 presents an overview of the activities to develop and implement a portfolio of tools to support users in their work with archaeological data. The ARIADNEplus partners developed and implemented a new Horizon Europe Data Management Plan Template for Archaeological Datasets, a Protocol for Archaeological Data Management, and a Guide for Archaeological Data Management Planning, accessible through the new ARIADNEplus DMP tool.1 The Policy Wizard Tool was updated. Chapter 4 shows the importance of sharing experiences from partners with already certified repositories to partners willing to set up an archaeological data repository. Providing guidelines and support on repository creation and management was the focus of activity here. Workshops, webinars, symposia and hackathons took place and scientific articles on data management policies and practices of digital archaeological repositories were published. Chapter 5 describes what partners willing to certify their repository need to be provided with: the explanation of and training on accreditation requirements when applied to repositories of archaeological data with a perspective on international initiatives, e.g. access restrictions for security and privacy reasons. Achieving a Trustworthy Digital Repository status, and making and keeping data FAIR is a joint journey. Chapter 6 highlights the application of the FAIR principles to archaeological data, taking into account different regulations throughout Europe and the potential sensitivities and IPR-related issues. The aim is to work towards solutions that harmonise the diverse approaches adopted. A major step forward has been an online survey conducted among repositories, with 60 respondents, giving essential insights into current policies and where there is room for improvement. Chapter 7 describes training activities on FAIR data management. Training and training materials have been produced and published., {"references":["Devaraju, A., Huber, R., Mokrane, M., Herterich, P., Cepinskas, L., de Vries, J., L'Hours, H., Davidson, J., and A. White (2022). FAIRsFAIR Data Object Assessment Metrics (0.5). Zenodo. https://doi.org/10.5281/zenodo.6461229","Dunning, A., de Smaele, M. and J. Böhmer (2017). Are the FAIR Data Principles fair?', International Journal of Digital Curation 12(2), 177-94. http://www.ijdc.net/article/view/567/493.","Garbuglia, F., B. Saenen, V. Gaillard, and C. Engelhardt (2021). D7.5 Good Practices in FAIR Competence Education (1.2). Zenodo. https://doi.org/10.5281/zenodo.6657165.","Geser, G. (2019). D2.1 Initial Report on Community Needs. Zenodo. https://doi.org/10.5281/zenodo.4916190.","Geser, G., J.D. Richards, F. Massara, and H. Wright (2022). Data Management Policies and Practices of Digital Archaeological Repositories. Internet Archaeology 59. https://doi.org/10.11141/ia.59.2.","Grootveld, M., E. Leenarts, S. Jones, E. Hermans, and E. Fankhauser (2018). OpenAIRE and FAIR Data Expert Group survey about Horizon 2020 template for Data Management Plans. Zenodo. http://doi.org/10.5281/zenodo.1120245.","Hollander, H. (2020). D3.1 Initial report on policies and strategies. Zenodo. https://doi.org/10.5281/zenodo.4916242.","Hollander, H. (2022). D3.2 Interim report on policies and strategies. Zenodo. https://doi.org/10.5281/zenodo.6380113.","Niven, K. (2016). D4.6: Final Report on Good Practices. http://legacy.ariadne-infrastructure.eu/wpcontent/ uploads/2019/01/ARIADNE_D4.6-Final-Report-on-Good-Practices.pdf.","Richards, J.D., U. Jakobsson, D. Novák, B. Štular, and H. Wright (2021). Digital Archiving in Archaeology: The State of the Art. Introduction, Internet Archaeology 58. https://doi.org/10.11141/ia.58.23.","Science Europe (2018). Guidance Document Presenting a Framework for Discipline-specific Research Data Management. Zenodo. https://doi.org/10.5281/zenodo.4925907","Science Europe (2021). Practical Guide to the International Alignment of Research Data Management - Extended Edition. Zenodo. https://doi.org/10.5281/zenodo.4915862","Science Europe (2021). Q&A: Aligning Research Data Management Across Europe. Zenodo. https://doi.org/10.5281/zenodo.4923141.","Wright, H., Moore, R., and T. Evans (2022). D5.15 Report on opening access to research data in the archaeology domain (1.0). Zenodo. https://doi.org/10.5281/zenodo.6676395."]}