Herrn Mathias Slawik, M.Sc. am Donnerstag, 12. Juli 2018 um 14:00 Uhr Im Institut für Telekommunikationssysteme Raum TEL Sputnik (18. Etage), Ernst-Reuter-Platz 7 in 10587 Berlin

zur Erlangung des akademischen Grades „Doktor der Ingenieurwissenschaften“ (Dr.-Ing.)

Der Titel der Dissertation lautet:

“Managing Cloud Ecosystems: Brokering, Deployment, and Consumption”

• brocker, security, conformity, federation
• forschung method hevner et al.

• cloud broker
  • vocablary
  • SDK-ng: DSL service description, static + behavior
  • backend: ruby angular
  • evaluation: project, group, expert interview, user study
• Security
  • trusted cloud transfer protocol
    • partially encryped –> enable http management + secure payload
• Conformity (proxy)
  • same code base + configurable modules
    • clien, service, central proxy
• Ferderation
  • identity providers, federation provider, many other components
• Future:
  • user centric open service conpendium
  • DSGVO
  • Fog, edge
  • inter cloud.

• 12 paper + 1 journal
• detailed work, implementation in 2 large projects.
• protocol implementation, federation
• Q&A
  • service description:

    • Q: how about future services, extendability, backward compatibility?
    • A: reason is domain or vocabular not enough: domain specific.
      • stakeholder must
      • documentation
      • different version, compatibility, versioning can be handled at api management
      • rdf mapping, etc
      • Q: how the language capture heterogeneous user requirements?
      • A: future works maybe
    • Q: how to make modle more user centric, easier for user to understand the semantic
    • A: generation of description,
    • Q: the work is project specific, praxis. What kind of requirements to use the realized system (assumptions, etc)?
    • A: service selection, protocols support, etc, federation, secrity
    • Q: how to map conformity in domain
    • A: XACML, for service conformance declaration bei registraion
    • Q: role, stakeholder model in user centric service description? or is this for developer
    • A: many users
      • market place manager
      • user: search
    • Q (küppel): Why using ruby as DSL
    • A:
      • syntax close to plain text
    • Q: why the providers form federation? define federation rules, characteristic?
    • A: there are framework and technique for members, eduGain
      • finance monetary reason
    • Q: How the evaluation, interview were carried out? checklist, questionairs
    • A:
      • focus group: formula
      • survey
      • Why not broad publics
      • → not fully completed
    • Q: can proxy be provided by a provider as service?
    • A: cloudflare, google, middlebox providers.
    • Q: why not using other DSL osdl?
    • A: service descriptions, deployment specific.
• Research
  • Policy description, templates, user-domain-technique