Cloud, Web & Mobile — Concept Map (MOC)
Map of content for Cloud, Web & Mobile (Univ. Duisburg-Essen, Torben Weis), active in exam period 2026-winter. Course page: cloud-web-mobile · Exam prep: 2026-winter-cloud-web-mobile.
Pages are currently one per lecture (deliberate: the lecture blocks are dense and self-contained). Split a page once a single section is quizzed on repeatedly and needs its own mastery state.
Concept pages
| # | Lecture | Page | Owns | Mastery | Source |
|---|---|---|---|---|---|
| 1 | Historie & Motivation + Begrifflichkeiten | cloud-history-and-terminology | centralization cycle, network effects (Metcalfe/Reed), lock-in, buy-vs-rent, WWW/mobile limits, energy, SaaS/PaaS/IaaS/DaaS, public/private/hybrid/community, SLA + SMART, billing metrics | new | 01_historie.md (35 p.) |
| 2 | Rechenzentren + IaaS | data-centers-and-iaas | siting criteria, cluster→rack→server, failure-as-normal, replication placement, physical security, IaaS market/model, instance families, on-demand/reserved/spot, Elastic IP, VPC/DMZ | new | 02_rechenzentren_iaas.md (20 p., PARTIAL) |
| 3 | Virtualisierung & Sandboxing | virtualization-and-sandboxing | isolation/aggregation/migration, VMM requirements + time-multiplexing/partitioning/mediation, hypervisor vs. hosted, rings + deprivileging + IA-32 holes + paravirtualisation/VT-x, shadow page tables, I/O device models + DMA, containers (namespaces, cgroup v2), Docker | new | 03_virtualisierung_sandboxing.md (42 p., PARTIAL) |
Reading order
L1 Historie/Motivation → terminology → cloud-history-and-terminology
L2 Rechenzentren → IaaS → data-centers-and-iaas
L3 Virtualisierung → Sandboxing → virtualization-and-sandboxing
L4+ not yet ingestedKnown gaps
- Virtualisierung is now covered by L3 (virtualization-and-sandboxing) — cross-link it from L1/L2’s “virtuelle Server-Instanzen” claims when next linting.
- Nested paging / EPT (Intel VT-x’s second page-walk level) is not in L3, which stops at shadow tables — flag if the exam expects it.
- Lecture 3 is
PARTIAL: 19 of 42 slides are figure-only, so re-runningpdf2mdwill always look thin — the diagrams live in the wiki, not inraw/. - Green IT / energy numbers are captured inside L1, but no dedicated page; revisit if the exam asks for calculations.
- REST vs SOAP is only named in L2 — thin coverage for a term that exams like to contrast.
- Data protection / GDPR implications of geo-distributed data centers (named in L2) deserve their own page once the course covers legal aspects.
- No quiz page yet for this course →
wiki/quizzes/.
Maintenance
Add a row per new lecture ingest; set mastery after each quiz or mock. If a row grows beyond ~15 concepts, split by lecture.