Service-centric Networking


Welcome to the course Digital Communities (winter term 2021 / 2022)

First lecture: Friday, October 22nd, 2021, 14:00 o'clock.

The course syllabus and accompanying material such as research papers, homework, links and lecture slides are
available via the following ISIS forum.

Important: This course is limited to 50 participants.
If you want to register for this course (and for the exam at the end of the semester), you need to submit your
registration via the course registration link published in ISIS by November 17th, 2021, 23:59 o'clock at the latest.

Overview Digital Communities

The module starts with an introduction to the fundamentals of digital communities and an overview of historical and
contemporary online social networks (OSN) and the technological challenges and problems they face.

The second part of the module discusses architectures, standards, and protocols of the social web with a clear focus
on decentralized and distributed online social networks. This includes architectural concepts for federated, peer-topeer,
and blockchain-based online social network architectures as well as the standards and protocols implemented
for inter-platform communication and collaboration. For example, architectures and protocols of various peer-topeer
systems and Blockchains are analyzed and discussed.

The third part of the module focuses on decentralized identity management (IDM), discussing various aspects of
IDM and existing established and novel services, such as the Domain Name Service (DNS), the Ethereum Name
Service (ENS), or Self-Sovereign Identity (SSI) and the concepts of verifiable claims.

Finally, the module gives an introduction to graph theory, followed by methods and applications of social network
analysis. The module aims to present a holistic view of the different parts, discussing historic, current state-of-the-art, and
novel standards and systems. If applicable, scientific literature (papers) and live coding examples are used during the
lecture. Students who have successfully finished this module have an overview of current and future concepts of digital
communities, specifically of the architectural aspects they are based on. They have acquired a deep understanding
of both low and high level aspects of decentralized OSN services and are able to apply the various concepts for
creating novel OSN platforms.

Target Group

Master students of

  • Computer Science (Informatik) / Kommunikationsbasierte Systeme
  • Computer Engineering (Technische Informatik) / Informationssysteme
  • Innovation in Information and Communication Technology


LectureThursdayOctober 21, 2021 - February 17, 202214:00 - 16:00Online
LectureFridayOctober 22, 2021 - February 18, 202214:00 - 16:00Online


Oral exams will be offered between 1st of March and 18th of March, 2021. The exam will take place at Ernst - Reuter
- Platz 7, 10587 Berlin, TEL Building, 16th floor. This module is limited to 50 participants.

Lecture Materials

Accompanying material such as research papers, homework, links and presentation slides are available via the ISIS forum.




Building TEL