AZ-900の試験を英語で受けるに至り、翻訳なしで勉強をしてまとめていく勉強ノートです。
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学習内容
Intro to cloud computing: Describing cloud concepts
Define cloud models
The three main cloud models: private, public, and hybrid.
Private cloud
- What is it?
- Cloud used by a single entity.
- Pros
- Provides much greater control for the company and its IT department.
- Cons
- Comes with greater costs
- Comes with fewer of the benefits of a public cloud deployment
- may be hosted from consumer's on site datacenter
- may be hosted in a dedicated datacenter:
- ex: third party that has deticated datacenter to consumer's company
Public cloud
- What is it?
- Cloud that is built, controlled, and maintained by a third-party cloud provider.
- Pros
- Unlike private cloud, anyone that wants to purchase cloud services can access and use resources.
Hybrid cloud
- What is it?
- A computing environment that uses both public and private clouds in an inter-connected environment.
- Pros
- Allows private cloud to adapt to increased, temporary demand by deploying public cloud resources.
- Can be used for providing an extra layer of security
- ex: choosing services to keep in public cloud or deploy to their private cloud infrastructure
| Public cloud | Private cloud | Hybrid cloud |
|---|---|---|
| CapEx doesn't scale up | Organizations' control over resources and security: yes | Provides most flexibility |
| The proces of creating, updating and deleting user accounts (provisioned and deprovisioned) can be quickly done | Data is not collocated with other organizations' data | Where to run applications are determinied by organizations |
| Organizations only pay for what they use | Startup and maintenance: hardwared must be purchased | Organizations' control over security, compliance, or legal requirements: yes |
| Organizations' control over resources and security: no | Organizations' responsibility for hardware maintenance and updates: yes |
Multi-cloud
- Uses two or more public cloud providers
- Manages resources and serucirty in all the environments
Azure Arc
- Set of technologies
- helps manage cloud environment
- the cloud type doesn't matter: it can be private cloud in consumer's datacenter or public cloud solely on azure.
Azure VMware Solution
- can be used when migration to public or hybrid cloud from private cloud environment is needed.
- lets the consumer's VMware workloads in Azure with seamless integration and scalability
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