Security Groups are not optional. They are your first line of defense in AWS | | AWS Explained
In this video, our DevOps Engineer Victoria explains why Security Groups are foundational to AWS security.
They function as stateful, instance level firewalls that control exactly what inbound and outbound traffic is allowed, while everything else is denied by default.
She also covers why proper layering between web, application, and database tiers, combined with least privilege, is essential in production environments.
If you run EC2, databases, or load balancers, this is core AWS architecture knowledge.
Watch the video and review your AWS security posture.
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