Cloud architecture and terminology

Azure Regions & Availability Zones: Place where your VMs are hosted or created 

•  For example Canada central, East US 

Vnet: Virtual network on a cloud all you're resources are reside

            Every virtual n/w has range example : 10.1.0.0/16 ( 10.1.0.0 -10.1.255.255 ) 65536 addresses 

Subnet : sub partition of Vnet to create additional resources 10.1.0.0/24 (10.1.0.0 - 10.1.0.255) 256 address

                By default each subnet in the same Vnet has connectivity

8.8.8.8 = 32 bit

10.1.0.0/16 = last two bits can be used for max addresses = 65536

10.1.0.0/24 = last one bit can be use for max addresses = 256 

Resource Group: any resource created within azure should be assigned to at least one RG

NSG: wrap subnets in NSG to filter traffic ( allow inbound & outbound rules)

NAT:

Load balancer: add VMS to backend pool and add ip config

Application Gateway:

Internet Gateway :

VPN Gateway :

Express Route :

Availability sets :

fault domain :

VMSS: scale in scale-out rules

JIT access: give Adhoc (few hours) access give access to the user

NIC: Each VM has NIC that connects to a subnet

Cidr - 10.0.0 base ip /16 subnet mask

255.255.255.0 windows

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