AWS VPC
Amazon Virtual Private Cloud (VPC) lets you provision a logically isolated section of the AWS cloud where you launch resources in a virtual network you define.
What is VPC? (Simple Explanation)
Think of VPC like your own private gated community in the cloud. You build the walls (subnets), set up the roads (route tables), and decide who can enter (security groups). Everything inside is isolated from your neighbors.
When Would You Use VPC?
- Isolated application environments
- Multi-tier web applications
- Hybrid cloud connectivity
- Compliance-bound workloads (PCI, HIPAA)
Who Uses VPC?
From startups to enterprises, VPC powers:
What Makes VPC Powerful
VPC Pricing & Free Tier
Free Tier: 1GB data transfer out (12 months), 750 hours of ELB (12 months). Pay-as-you-go from ~$0.025/GB for CloudFront.
VPC Best Practices
- 1Use VPC Flow Logs for network traffic monitoring and threat detection
- 2Restrict security group inbound rules to specific CIDR ranges (never 0.0.0.0/0 for SSH/RDP)
- 3Use VPC Endpoints to keep traffic to AWS services off the public internet
- 4Enable WAF with managed rules (AWS Managed Core Rule Set) on all public-facing load balancers
- 5Use Transit Gateway instead of VPC peering mesh for >5 VPCs
Getting Started with VPC in 5 Minutes
- 1Open the AWS Console and navigate to VPC
- 2Click "Create" and define your network scope (VPC, subnets, region)
- 3Configure routing, security, and access controls
- 4Review and create — test connectivity before routing production traffic
VPC CLI Quick Reference
3 production-ready commands. Full CLI Library (225+ services) →
aws ec2 describe-vpcs --query 'Vpcs[*].{ID:VpcId,CIDR:CidrBlock,Default:IsDefault,Name:Tags[?Key==`Name`].Value|[0]}' --output tableList all VPCs with CIDR and nameaws ec2 describe-subnets --query 'Subnets[*].{ID:SubnetId,CIDR:CidrBlock,AZ:AvailabilityZone,VPC:VpcId,Public:MapPublicIpOnLaunch}' --output tableList all subnets with public/private visibilityaws ec2 create-vpc --cidr-block 10.0.0.0/16 --tag-specifications 'ResourceType=vpc,Tags=[{Key=Name,Value=my-vpc}]'Create a new VPC with a name tagPros & Cons of VPC
Pros
- Subnets, route tables, and network ACLs for segmentation
- NAT Gateways for private subnet internet access
- VPC Peering and Transit Gateway for cross-VPC communication
- VPC Endpoints for private AWS API access
- VPC Flow Logs for network traffic monitoring
Cons
- ✕Data transfer costs are notoriously difficult to predict — egress is the #1 hidden cost
- ✕Network ACL and Security Group rules can conflict in complex multi-tier apps
- ✕VPC design mistakes (overlapping CIDRs) are painful to fix after resources are deployed
VPC vs Alternatives
VPC vs EC2
Choose VPC for Isolated application environments and Multi-tier web applications. It excels at subnets, route tables, and network acls for segmentation.
Choose EC2 as an alternative when your requirements differ. Each service in the Network category serves different architectural patterns.
Services That Work with VPC
VPC is rarely used alone. It is typically combined with:
Compliance & Security
How AWS VPC fits into major compliance standards. Browse all 41 frameworks →
VPC configuration is audited by CIS Benchmarks v1.5–v3.0 for secure cloud defaults.
NIST 800-53VPC access controls, encryption, and audit logging map to NIST 800-53 AC, SC, and AU control families.
PCI DSS 4.0VPC encryption, access control, and logging support PCI DSS for cardholder data environments.
SOC 2VPC security, availability, and confidentiality controls evaluated under SOC 2 Trust Services Criteria.
ISO 27001VPC configuration and monitoring controls map to ISO 27001 Annex A information security management.
Frequently Asked Questions About VPC
What is AWS VPC?
Amazon Virtual Private Cloud (VPC) lets you provision a logically isolated section of the AWS cloud where you launch resources in a virtual network you define.
What is VPC used for?
VPC is commonly used for: Isolated application environments; Multi-tier web applications; Hybrid cloud connectivity; Compliance-bound workloads (PCI, HIPAA). It's a core service in the network category of AWS.
Is VPC free?
Free Tier: 1GB data transfer out (12 months), 750 hours of ELB (12 months). Pay-as-you-go from ~$0.025/GB for CloudFront.
What are the key features of VPC?
VPC's most important capabilities include: Subnets, route tables, and network ACLs for segmentation. NAT Gateways for private subnet internet access. VPC Peering and Transit Gateway for cross-VPC communication. VPC Endpoints for private AWS API access. VPC Flow Logs for network traffic monitoring. Each of these is designed to help teams isolated application environments.
How does VPC compare to alternatives?
VPC competes with both AWS-native alternatives (EC2, RDS, Lambda) and third-party equivalents. The right choice depends on your specific requirements for scalability, cost, and operational overhead. See the comparisons section below for detailed guidance.
Which compliance frameworks apply to VPC?
CIS AWS v3.0: VPC configuration is audited by CIS Benchmarks v1.5–v3.0 for secure cloud defaults. NIST 800-53: VPC access controls, encryption, and audit logging map to NIST 800-53 AC, SC, and AU control families. PCI DSS 4.0: VPC encryption, access control, and logging support PCI DSS for cardholder data environments. SOC 2: VPC security, availability, and confidentiality controls evaluated under SOC 2 Trust Services Criteria. ISO 27001: VPC configuration and monitoring controls map to ISO 27001 Annex A information security management.
People also search for
Was this page helpful?
Ready to secure your VPC configuration?
Pavora continuously monitors your AWS VPC for misconfigurations, compliance violations, and security risks.