ICT SERVICE MANAGEMENT
Lecture 8 — Comprehensive Exam Summary
Guest Lecture — Cloud Computing (AE)
Sigfried Seldeslachts & Nick Geerts · Technical perspective
Overview
Guest lecture by AE consultancy (Leuven, ~450 employees, founded 1999).
EXAM TIP: Guest lectures are NOT recorded. The professor said exam questions can draw on guest
lecture material. Be ready to (a) classify services into IaaS/PaaS/SaaS, (b) discuss NFRs and cloud, (c)
discuss BCDR and security.
Part 1 — History of Cloud Computing
Slide: Mainframe → cloud timeline (1970s → 2020s)
• 1970s — IBM mainframe virtualization
• 1990s — PCs, client-server
• 2000s — VMware virt; Salesforce SaaS (1999); AWS launched (2002); EC2 (2006)
• 2010s — managed services (PaaS); Docker + Kubernetes containers; Lambda serverless
• 2020s — security + AI/LLM era
Lecture 8 — ICT Service Management — Page 1
,Part 2 — What is the Cloud?
Slide: The cloud (XKCD #908) — someone else's computer
Cloud: On-demand access to IT resources over the internet — servers, storage, networking, software
& tools.
Where does the cloud live?
Slide: Cloud regions / availability zones / buildings
• Azure: 60+ regions × ~10 buildings × 10 000+ servers
• Belgium Central region (newer) — used for compliance
• West Europe — most workloads (more services available)
Lecture 8 — ICT Service Management — Page 2
, Why cloud?
Slide: Technical and business reasons
Technical Business
High availability CAPEX → OPEX
Scaling/performance Scalability (holiday sales)
Physical infra managed Faster time to market
Updates Global reach
Security tools (DDoS = a button) Focus on core business
KEY INSIGHT: cloud is mainly a LEVER for IMPROVING NON-FUNCTIONAL REQUIREMENTS.
Lecture 8 — ICT Service Management — Page 3
Lecture 8 — Comprehensive Exam Summary
Guest Lecture — Cloud Computing (AE)
Sigfried Seldeslachts & Nick Geerts · Technical perspective
Overview
Guest lecture by AE consultancy (Leuven, ~450 employees, founded 1999).
EXAM TIP: Guest lectures are NOT recorded. The professor said exam questions can draw on guest
lecture material. Be ready to (a) classify services into IaaS/PaaS/SaaS, (b) discuss NFRs and cloud, (c)
discuss BCDR and security.
Part 1 — History of Cloud Computing
Slide: Mainframe → cloud timeline (1970s → 2020s)
• 1970s — IBM mainframe virtualization
• 1990s — PCs, client-server
• 2000s — VMware virt; Salesforce SaaS (1999); AWS launched (2002); EC2 (2006)
• 2010s — managed services (PaaS); Docker + Kubernetes containers; Lambda serverless
• 2020s — security + AI/LLM era
Lecture 8 — ICT Service Management — Page 1
,Part 2 — What is the Cloud?
Slide: The cloud (XKCD #908) — someone else's computer
Cloud: On-demand access to IT resources over the internet — servers, storage, networking, software
& tools.
Where does the cloud live?
Slide: Cloud regions / availability zones / buildings
• Azure: 60+ regions × ~10 buildings × 10 000+ servers
• Belgium Central region (newer) — used for compliance
• West Europe — most workloads (more services available)
Lecture 8 — ICT Service Management — Page 2
, Why cloud?
Slide: Technical and business reasons
Technical Business
High availability CAPEX → OPEX
Scaling/performance Scalability (holiday sales)
Physical infra managed Faster time to market
Updates Global reach
Security tools (DDoS = a button) Focus on core business
KEY INSIGHT: cloud is mainly a LEVER for IMPROVING NON-FUNCTIONAL REQUIREMENTS.
Lecture 8 — ICT Service Management — Page 3
