Computer Science · A1.1 Computer Hardware and Operation

A1.1.9 — Cloud Computing Services: SaaS, PaaS and IaaS

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IB DP Computer Science — A1 Computer fundamentals — Computer hardware and operation | SL | A1.1.9

📋 What You Will Learn

  • Define cloud computing and the idea of computing as an on-demand service
  • Describe software as a service (SaaS), platform as a service (PaaS) and infrastructure as a service (IaaS)
  • Explain who manages which layer of the stack under each model
  • Compare the models by degree of control, flexibility and management burden
  • Select and justify a service model for real-world scenarios, including resource management and availability

🍕 Why This Matters Think of eating pizza. Cook everything at home and you control every ingredient but do all the work (running your own servers). Buy a ready-made base and add toppings (PaaS). Order delivery (IaaS supplies the kitchen-grade essentials). Eat at a restaurant and everything is done for you — you just choose from

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More notes on A1.1 Computer Hardware and Operation

  1. 01A1.1.3 — CPU vs GPU: Architecture, Performance and Cooperation
  2. 02A1.1.1 — CPU Components: Functions and Interactions
  3. 03A1.1.8 — The Concept of Compression
  4. 04A1.1.5 — The Fetch, Decode and Execute Cycle
  5. 05A1.1.4 — Primary Memory: RAM, ROM, Cache and Registers
  6. 06A1.1.6 — Pipelining in Multi-Core Architectures
  7. 07A1.1.7 — Secondary Memory Storage: Internal and External
  8. 08A1.1.2 — The Role of the GPU