AZ-900 study notes

Storage

Blob storage is a flat structure used for unstructured data (images, videos etc)
Azure file storage and Azure Data Lake storage are hierarchical file storage similar to SMB shares, both of which you can do shares on

Azure Express route is more expensive than a site to site VPN
Azure Express route does not traverse the internet, it's a private connection
One vnet cannot talk to another vnet unless you create a vnet peer
For a site to site vpn the "Local Network Gateway" is created in Azure but it refers to the IP address of the on prem router/VPN. The "Virtual Network Gateway" is also created in Azure but this refers to the Azure side of the VPN
By default all virtual machines get outbound traffic to the internet
You can divide a vnet up in to subnets and configure routes between them
If you want inbound traffic from the internet to a vm you must assign a public IP to the vm