AZ-900 Episode 01 - Cheat Sheet

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• 🧭 Episode List
• 💬 Episode Summary
• 📚 Study cheat sheet
• 🧠 Practice Test

• Skills Learned
  • Describe what is Cloud Computing
  • Describe terms such as High Availability, Scalability, Elasticity, Agility, Fault Tolerance, and Disaster Recovery
• Study Guide
  • Microsoft Learn: Explore key cloud concepts
  • Azure Homepage: Cloud computing terms
  • 🌐 Wikipedia: Cloud Computing Characteristics
  • 🌐 NIST: The NIST Definition of Cloud Computing

Cloud Computing

Service delivery model over the internet (cloud). This includes but is not limited to

• compute power meaning servers such as windows, linux, hosting environments, etc.
• storage like files and/or databases
• networking in azure but also outside when connecting to your company network
• analytics services for visualization and telemetry data

Key concepts

• scalability is the ability to scale, so allocate and deallocate resources at any time
• elasticity is the ability to scale dynamically
• agility is the ability to react fast (scale quickly)
• fault tolerance is the ability to maintain system uptime while physical and service component failures happen
• disaster recovery is the process and design principle which allows a system to recovers from natural or human induced disasters
• high availability is the agreed level of operational uptime for the system. It is a simple calculation of system uptime versus whole lifetime of the system.
  • availability = uptime/(uptime + downtime)