RT Journal Article T1 Understanding Federation: An Analytical Framework for the Interoperability of Social Networking Sites A1 Tapiador, Antonio A1 Hassan Collado, Samer AB Although social networking has become a remarkable feature in the Web, full interoperability has not arrived. This work explores the main 5 paradigms of interoperability across social networking sites, corresponding to the layers in which we can find interoperability. Building on those, a novel analytical framework for SNS interoperability is introduced. Seven representative interoperability SNS technologies are compared using the proposed framework. The analysis exposes an overwhelming disparity and fragmentation in the solutions for tackling the same problems. Although there are a few solutions where consensus is reached and are widely adopted (e.g. in object IDs), there are multiple central issues that are still far from being widely standarized (e.g. in profile representation). In addition, several areas have been identified where there is clear room for improvement, such as privacy controls or data synchronization. YR 2018 FD 2018 LK https://hdl.handle.net/20.500.14352/18935 UL https://hdl.handle.net/20.500.14352/18935 LA eng DS Docta Complutense RD 5 abr 2025