78 lines
3.9 KiB
Markdown
78 lines
3.9 KiB
Markdown
## Introduction to cloud computing
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- Define cloud computing.
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- Compute Power
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- Storage
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- Pay only ressources you use
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- Upkeep is done by cloud provider
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- Describe the shared responsibility model.
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- Cloud Provider: Physical security, power, cooling, and network connectivity are the responsibility
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- Consumer: responsible for the data and information stored in the cloud.
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- IAAS (Infrastructure)-> PAAS (Platform) -> SAAS (Software)
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- {:height 231, :width 700}
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- Define cloud models, including public, private, and hybrid.
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- | **Public cloud** | **Private cloud** | **Hybrid cloud** |
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| ---- | ---- | ---- |
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| No capital expenditures to scale up | Organizations have complete control over resources and security | Provides the most flexibility |
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| Applications can be quickly provisioned and deprovisioned | Data is not collocated with other organizations’ data | Organizations determine where to run their applications |
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| Organizations pay only for what they use | Hardware must be purchased for startup and maintenance | Organizations control security, compliance, or legal requirements |
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| Organizations don’t have complete control over resources and security | Organizations are responsible for hardware maintenance and updates | |
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- Azure ARC
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- Manage Cloud environment
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- Identify appropriate use cases for each cloud model.
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- Describe the consumption-based model.
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- Capital expenditure (**CapEx**)
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- upfront one time expenditure
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- Operational expenditure (**OpEx**)
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- spending money on services or products over time
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- Cloud computing is here
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- Compare cloud pricing models.
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- pay-as-you-go pricing model
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- ## Describe the benefits of using cloud services
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- Describe the benefits of high availability and scalability in the cloud.
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- **uptime** (or availability)
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- **demand** (or scale)
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- Scalability refers to the ability to adjust resources to meet demand
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- **vertical**
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- increasing or decreasing the capabilities of resources (i.e. RAM or CPU)
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- **horizontal**
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- adding or subtracting the number of resources (i.e. VMs or containers)
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- each Service has own SLA
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- Describe the benefits of reliability and predictability in the cloud.
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- **Reliability** is the ability of a system to recover from failures and continue to function
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- decentralized design and global scale across data centers
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- **Predictability**
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- **performance** predictability
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- Autoscaling, load balancing, and high availability
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- **cost** predictability
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- track cost in real time
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- Total Cost of Ownership (TCO) or Pricing Calculator
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- Describe the benefits of **security** and **governance** in the cloud.
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- Set templates
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- update all your deployed resources to new standards
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- Cloud-based auditing
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- handle distributed denial of service (DDoS)
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- Describe the benefits of **manageability** in the cloud.
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- Automatically scale resource
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- Deploy resources based on (preconfigured) templates
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- Monitor health and replace failing resources
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- Automatic alerts
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- Use
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- Web Portal, CLI, APIs, PowerShell
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- ###Describe cloud service types
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- Describe Infrastructure as a Service (IaaS).
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- renting the hardware in a cloud datacenter (i.e. Hetzner)
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- **Scenarios**
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- Lift-and-shift migration
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- Test an development
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- Describe Platform as a Service (PaaS).
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- maintain the operating systems, databases, and development tools
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- **Scenarios**
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- Development framework
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- Analytics or business intelligence
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- Describe Software as a Service (SaaS).
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- Use Maintained Software
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- **Scenarios**
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- Email and messaging.
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- Business productivity applications.
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- Finance and expense tracking.
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- Identify appropriate use cases for each cloud service (IaaS, PaaS, SaaS). |