it services: consulting, software development, internet and support./ project 545 - technical challenges and security aspects in the server-side introduction of fido2 (thanos) sub-project 1: technical challenges./ the aim of the project is a comprehensive investigation of technical challenges in the server-side introduction of fido2 and a technical analysis of fido2 servers. the technical challenges are to be examined in the form of research and in the form of a survey among website operators. in addition, the available fido2 servers are to be determined as part of a market survey and their properties and range of functions are to be determined. furthermore, relevant fido2 servers must be analyzed technically and the results converted into a generic comparison of the various integration options of fido2 servers (library, module in an iam work, independent fido2 server, etc.). d on these results, a recommendation for action is to be drawn up to support website operators in choosing an integration option for fido2 servers and to enable a cost-benefit analysis.