Summary
Summary Azure Fundamentals AZ-900
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Most important information I gathered from the Az-900 coursework, in preparation for the exam
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The Cloud DefinedSaturday 25 June 2022 13:20
Characteristics Cloud Computing Benefits
1. Resource pooling
2. Rapid elasticity 1. No up-front capital expenditure
3. Metered usage
4. Broad access 2. Cloud provider security accreditations
5. Self-provisioning
3. Quick IT solution deployment
4. Underlying technical complexities are hidden
5. Less on-premises space, power, HVAC
Cloud Computing Considerations
1. Cloud services that meet business needs
2. On-premises system/data cloud migration
3. Technical expertise of IT staff
4. Total cost of ownership (TCO)
5. Data privacy laws/regulations
Cloud Computing Page 1
,Virtualisation and the Cloud
Saturday 25 June 2022 13:29
- Cloud computing depends on virtualisation
- The use of virtualisation does not unto itself imply cloud computing
Hypervisors
- Physical servers that host virtual machines ("guests")
Type 1 - Bare-metal
Type 2 - Runs within a standard OS
Virtualisation Types
- Operating system
- Application (predates containerisation and containers like docker)
- Networking
Software Defined Networking (SDN)
- Desktop
Virtualisation Benefits
- Cloud tenant isolation
- Rapid provisioning of VMs
- Easy provisioning of VMs
Cloud Computing Page 2
,Cloud Computing and Economies of Scale
Saturday 25 June 2022 13:38
Resource pooling
- Storage
- Hypervisors
- Routers
- Switches
- Inter-data centre network links
Other Considerations
- On-prem: capital expenditure (Capex)
- Cloud: operating expenditure (Opex)
Cloud Computing Page 3
, Public Clouds
Saturday 25 June 2022 13:41
- Broad access
- Resource pooling
- Rapid elasticity
- Self-provisioning
- Metered usage
- Cloud resource management
○ Web browser
○ Other GUI tools (storage explorer tool)
○ Command line tools
○ APIs
- Split IT responsibility depending on cloud services used
- Cloud service offerings may vary from between geographical regions
Cloud Computing Page 4
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