Key points

• Lambda VPC configuration selects existing subnets and security groups for function network access.
• The execution role needs permission for Lambda to manage required network interfaces.
• VPC attachment changes the function network path and does not itself grant application-layer access.

Best-known use cases

• Connect Lambda code to an existing private database or service.
• Run application workloads inside an approved network boundary.

What candidates often confuse it with

• Security-group/network reachability and IAM/service authorization are separate controls.
• VPC attachment enables access through an existing network; DVA-C02 excludes VPC, subnet, route, and Direct Connect design.

Key takeaway

Configure Lambda to use approved VPC resources without turning the developer task into network architecture design.

Related services

• AWS Lambda
• Amazon EC2
• Amazon RDS

Relevant exam tasks

• D1.2 — Develop code for AWS Lambda
• 1.2.1 — Describe the access of private resources in VPCs from Lambda code

Learn more

• Amazon VPC