Core Compute Services

Question 1

Virtualization

Answer 1

Emulation of physical machines
Different virtual hardware configuration per machine/app
Different operating systems per machine/app
Total separation of environments
- file systems,
- services,
- ports,
- middleware,
- configuration

Question 2

Virtual Machines

Answer 2

Infrastructure as a Service (IaaS)
Total control over the operating system and the software
Supports marketplace and custom images
Best suited for
- Custom software requiring custom system configuration
- Lift-and-shift scenarios
Can run any application/scenario
- web apps & web services,
- databases,
- desktop applications,
- jumpboxes,
- gateways, etc.

Question 3

Virtual Machine Scale Sets

Answer 3

Infrastructure as a Service (IaaS)
Set of identical virtual machines
Built-in auto scaling features
Designed for manual and auto-scaled workloads like web services,* batch processing, etc.

Question 4

Containers

Answer 4

Use host’s operating system
Emulate operating system (VMs emulate hardware)
Lightweight (no O/S)
- Development Effort
- Maintenance
- Compute & storage requirements
Respond quicker to demand changes
Designed for almost any scenario

Question 5

Azure Container Instances

Answer 5

Simplest and fastest way to run a container in Azure
Platform as a Service
Serverless Containers
Designed for
- Small and simple web apps/services
- Background jobs
- Scheduled scripts

Question 6

Azure Kubernetes Service (AKS)

Answer 6

Open-source container orchestration platform
Platform as a Service
Highly scalable and customizable
Designed for high scale container deployments (anything really!)

Question 7

App Service

Answer 7

Designed as enterprise grade web application service
PaaS
Supports multiple programming languages and containers

Question 8

Azure Functions (Function Apps)

Answer 8

Platform as a Service
Serverless
Two hosting/pricing models
- Consumption-based plan
- Dedicated plan
Designed for micro/nano-services

Question 9

Summary - aaS?
Virtual Machines
VM Scale Sets
Container Instances
Kubernetes Service
App Services
Functions

Answer 9

(IaaS) - Custom software, custom requirements, very specialized, high degree of control
(IaaS) - Auto-scaled workloads for VMs
(PaaS) - Simple container hosting, easy to start
(PaaS) - Highly scalable and customizable * container hosting platform
(PaaS) - Web applications, a lot of enterprise web * hosting features, easy to start
(PaaS) (Function as a Service) (Serverless) - micro/nano-services, excellent consumption-based pricing, easy to start