Azure Notes

• About AZ-900
• Containers
• Serverless Computing
• Difference between VM,Containers and Serverless
• A Few Features Of Cloud
• CapEx Vs OpEx
• Cloud Deployement Methods

About AZ-900

Containers

• Provide a consistent,isloated execution environment
• Applications and dependencies packaged
• Standard runtime environment needed to execute the app
• Example:Docker

*Containers start up in few seconds!?*

There is no OS to boot and initialize.We only need the app to launch.

Serverless Computing

• Application broken down into separate functions
• Good for automated tasks
• Cloud computing is flexible and cost-efficient

Difference between VM,Containers and Serverless

• 
• Thus was the difference

A Few Features Of Cloud

• Cost effective
• Scalable

**Vertical Scaling**-Scaling UP.Adding resources to increase power of an existing server.

**Horizontal Scaling**-Scaling OUT.Adding more servers that function together as a single unit.

• Elastic
• Current
• Reliable:Data backup,Disaster and Recovery Present

CapEx Vs OpEx

• CapEx: Spending money on physical infrastructure.Expense deduction comes with time.Ex:Server,Storage and Network costs.
• OpEx: Spending money on services or products now.Ex:Software Licenses

Cloud Deployement Methods

• *Public Model*
• Local hardware to manage or keep up to date
• Ex:AWS and Azure

• *Private Cloud*
• Cloud environment in own datacenter
• Self service access to compute resources

• *Hybrid Cloud*
• Mix of Public+Private
• Ex:Host website in public Link to Private clou