: Example](#ec2-instance-types-example) - [Introduction to Security Groups](#introduction-to-security-groups) - [Common Use Cases](#common-use-cases) - [Deeper Dive](#deeper-dive) - [Security Groups Diagram](#security-groups-diagram) - [Examples of Security Group Rules](#examples-of-security-group-rules) - [Good to Know](#good-to-know) - [Classic Ports to Know](#classic-ports-to-know) - [EC2 Instance Launch Types](#ec2-instance-launch-types) - [On Demand Instance](#on-demand-instance) - [Reserved Instances](#reserved-instances) - [Savings Plans](#savings-pla