docs/pages/Learning ___ Azure ___ AZ-900%3A Microsoft Azure Fundamentals.md

• Test Content

  • AZ-900 Domain Area	Weight
    Describe cloud concepts	25-30%
    Describe Azure architecture and services	35-40%
    Describe Azure management and governance	30-35%

• Cloud Concepts

  • Introduction to cloud computing

    • Define cloud computing.
      • Compute Power
      • Storage
      • Pay only ressources you use
      • Upkeep is done by cloud provider
    • Describe the shared responsibility model.
      • Cloud Provider: Physical security, power, cooling, and network connectivity are the responsibility
      • Consumer: responsible for the data and information stored in the cloud.
      • IAAS (Infrastructure)-> PAAS (Platform) -> SAAS (Software)
      • {:height 231, :width 700}
    • Define cloud models, including public, private, and hybrid.

      • Public cloud	Private cloud	Hybrid cloud
        No capital expenditures to scale up	Organizations have complete control over resources and security	Provides the most flexibility
        Applications can be quickly provisioned and deprovisioned	Data is not collocated with other organizations’ data	Organizations determine where to run their applications
        Organizations pay only for what they use	Hardware must be purchased for startup and maintenance	Organizations control security, compliance, or legal requirements
        Organizations don’t have complete control over resources and security	Organizations are responsible for hardware maintenance and updates

      • Azure ARC
        • Manage Cloud environment
    • Identify appropriate use cases for each cloud model.
    • Describe the consumption-based model.
      • Capital expenditure (CapEx)
        • upfront one time expenditure
      • Operational expenditure (OpEx)
        • spending money on services or products over time
        • Cloud computing is here
    • Compare cloud pricing models.
      • pay-as-you-go pricing model

  • Describe the benefits of using cloud services

    • Describe the benefits of high availability and scalability in the cloud.
      • uptime (or availability)
      • demand (or scale)
        • Scalability refers to the ability to adjust resources to meet demand
        • vertical
          • increasing or decreasing the capabilities of resources (i.e. RAM or CPU)
        • horizontal
          • adding or subtracting the number of resources (i.e. VMs or containers)
      • each Service has own SLA
    • Describe the benefits of reliability and predictability in the cloud.
      • Reliability is the ability of a system to recover from failures and continue to function
        • decentralized design and global scale across data centers
      • Predictability
        • performance predictability
          • Autoscaling, load balancing, and high availability
        • cost predictability
          • track cost in real time
          • Total Cost of Ownership (TCO) or Pricing Calculator
    • Describe the benefits of security and governance in the cloud.
      • Set templates
      • update all your deployed resources to new standards
      • Cloud-based auditing
      • handle distributed denial of service (DDoS)
    • Describe the benefits of manageability in the cloud.
      • Automatically scale resource
      • Deploy resources based on (preconfigured) templates
      • Monitor health and replace failing resources
      • Automatic alerts
      • Use
        • Web Portal, CLI, APIs, PowerShell

  • Describe cloud service types

    • Describe Infrastructure as a Service (IaaS).
      • renting the hardware in a cloud datacenter (i.e. Hetzner)
      • Scenarios
        • Lift-and-shift migration
        • Test an development
    • Describe Platform as a Service (PaaS).
      • maintain the operating systems, databases, and development tools
      • Scenarios
        • Development framework
        • Analytics or business intelligence
    • Describe Software as a Service (SaaS).
      • Use Maintained Software
      • Scenarios
        • Email and messaging.
        • Business productivity applications.
        • Finance and expense tracking.
    • Identify appropriate use cases for each cloud service (IaaS, PaaS, SaaS).

• Azure architecture and services

  • Describe the core architectural components of Azure

    • 

    • Describe Azure regions, region pairs, and sovereign regions.

    • Describe Availability Zones.
    • Describe Azure datacenters.
    • Describe Azure resources and Resource Groups.
    • Describe subscriptions.
    • Describe management groups.
    • Describe the hierarchy of resource groups, subscriptions, and management groups.