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What does "security group" mean in programming?
security group is one of the most common terms in software development. This guide explains what it means, how it is used in practice, and why it matters, with real examples from the developer world.
Definition
A virtual firewall in AWS that controls inbound and outbound traffic for EC2 instances and other resources. Security groups are stateful: if you allow inbound traffic, the response is automatically allowed out.
Example
"Add port 443 to the security group to allow HTTPS traffic to the load balancer."
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