What you will learn
- Design a VPC
- Use public/private subnets
- Route with gateways
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The basics, in plain English
In the cloud, your servers need a private space to talk to each other safely. A VPC, or Virtual Private Cloud, is your own walled-off section of the cloud network where you decide what can connect to what. It is like having your own private office network inside a giant shared building.
- Network
- The connections that let computers send data to each other.
- VPC
- Your private, isolated section of the cloud network that you fully control.
- Subnet
- A smaller slice of your VPC, often split into public and private parts.
- Public vs private
- Public resources can be reached from the internet; private ones cannot.
- Security group
- A set of rules controlling which traffic is allowed in or out of a resource.
- Gateway
- A door that connects your private network to the internet or to other networks.
01
VPC
A VPC is your private network. Public subnets reach the internet via an internet gateway; private subnets egress through a NAT. Security groups and ACLs filter traffic.
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