Cloud Computing Overview

Lesson Focus

• Define cloud computing.
• Describe public cloud, private cloud, and hybrid cloud.
• Compare and contrast the three types of cloud computing.

Key Principles of Cloud Computing

• Pooling Resources
  • Eliminate inefficient resource allocation (islands).
  • Centralize resources for elasticity and efficient usage.
• Self-Service
  • Users provision resources as needed without administrative intervention.
  • Controlled through quotas, policies, and templates.
  • Concepts of showback and chargeback for resource usage.

Types of Cloud Computing

Public Cloud

• Example: Azure.
• Characteristics:
  • Most complete set of capabilities.
  • Managed via a rich management infrastructure.
  • Pay-as-you-go model (OPEX).
  • Accessed primarily over the internet.
  • Offers a wide range of services and regions.
  • Strong governance policies and role-based access control.

Private Cloud

• On-Premises Implementation
  • Utilizes physical servers with a management infrastructure.
  • Offers a set of services to business units with quotas.
  • Capital expenditure model (CAPEX).
  • Full flexibility within management stack capabilities.
  • Examples include Azure Stack and Azure Arc which bring Azure capabilities on-premises.

Hybrid Cloud

• Combines Public and Private Clouds
  • Seamless integration of on-premises resources with public cloud.
  • Allows bursting to public cloud during peak times.
  • Supports consistent management and services across environments.
  • Useful for regulatory or data requirements limiting public cloud use.
  • Facilitated by tools like Azure Arc for consistent management.

Key Takeaways

• Public Cloud: Ideal for most use cases with extensive services and flexibility.
• Private Cloud: Best for specific needs like regulatory constraints or latency requirements.
• Hybrid Cloud: Offers the advantage of both worlds, ensuring consistent operations across cloud environments.
  • Benefits from tools that provide seamless management across private and public platforms.

Summary

• Focus on understanding the differences and use cases for public, private, and hybrid clouds.
• Highlighted tools and services that enhance cloud capabilities and governance.