Compute Resource

Virtual Machine

Availability set

When you host your virtual machines in Azure, you sometimes need to cater to the following

1. An unplanned event wherein the underlying infrastructure fails unexpectedly. The failures could be attributed to network failures , local disk failures or even rack failures.

2. Planned maintenance events , wherein Microsoft needs to make planned updates to the underlying physical environment. In such cases , a reboot might be required on your virtual machine.

You can increase the availability of your application by making use of availability sets. Each virtual machine that is assigned to the availability set is assigned a separate fault and update domain.

Fault domains are used to define the group of virtual machines that share a common source and network switch. You can have up to 3 fault domains.

Update domains are used to group virtual machines and physical hardware that can be rebooted at the same time. You can have up to 20 update domains.

Availability Zones

• This features help provides better availability for your application by protecting them from datacenter failures.

• Each Availability zone is a unique physical location in an Azure region.

• Each zone comprises of one or more data centers that has independent power, cooling, and networking

VM Scale set

• Define the rule to scale out (adding new vm) / scale in (reducing vm)

VM Image

• A copy template of vm including data disk or just os disk

• It can be used of creating another vm or vm scale set

Azure Bastion

• Provide RDP/SSH connectivity to vm from portal through TLS

• Prevent from exposing IP address to external

Azure Web App

• Similar with GCP Cloud Run, is PAAS to let developer deploy the code or docker image easily

Auto Scale

• Based the metric defined , auto scale the instance of the web app

Deployment Slots

• Divided into several slots, like version 1 and version 2

• Can adjust the percentage of traffic between different slots

Backup

• can create the backup and store it into store account

• can restore the backup to new app service

Kubernetes and Service Fabric

• To build micro services

Data Factory

• To create pipeline to process the data and convert data from source compute resource or storage to other destination of other compute resource or storage in different format

Logic App

• To build a web flow step by step and integrate with other service , such as sending approval via gmail

Event Hub & Service Bus

• Both are message brokers

• Azure Event Hubs focuses more on event streaming whereas Azure Service Bus is more focused on high-value enterprise messaging, which means the later is focused on messages rather than events.

Event Grid

• Mainly used for communication between azure resources

• Trigger the event when there are events happened on publisher

• Handled the event with azure function, logic app ,etc