The Research Data Center at LIfBi (Forschungsdatenzentrum, FDZ-LIfBi) is primarily responsible for the user-friendly preparation of survey and test data of the National Educational Panel Study (NEPS) and its provision to researchers in the form of Scientific Use Files. Data from other panel studies such as ReGES are also part of the research data infrastructure. The FDZ-LIfBi offers comprehensive documentation of the data material in German and English. It ensures secure and flexible data access via several options (download, remote, on-site). Further services are contract and authorization management, regular data trainings and workshops, annual user conferences, the semi-annual newsletter "LIfBi data", a collection of video tutorials, an online discussion forum and several other tools. The FDZ-LIfBi became accredited by the German Data Forum (RatSWD) in 2012 and has since been actively involved in the Committee for Data Access (FDI Ausschuss). As part of the quality assurance, it demonstrates compliance with the criteria of FAIR data provision and data access in an annual monitoring.