DevOps
Networking in ECS: VPCs, Security Groups, and Load Balancers
Step 1: VPC Setup
If not default, create VPC: Console > VPC > Create VPC > Resources: VPC and more.
Subnets: Public for internet access.
Step 2: Security Groups
Create SG: Allow inbound TCP 3000 from anywhere (for testing).
Attach to service.
Step 3: Application Load Balancer (ALB)
Create ALB: EC2 > Load Balancers > Create > ALB.
Target group: IP targets, port 3000.
In service creation/update, add load balancer.
Test: ALB DNS name.
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