VPC — Complete Guide
VPC — Complete Guide: free step-by-step lesson with examples, common mistakes, and interview tips — part of AWS Cloud Tutorial on Toolliyo Academy.
On this page
AWS Cloud Tutorial · Lesson 11 of 100
VPC
Core services → Projects
Core services · 1 — AWS basics · ~6 min · AWS — Networking & Security
What is this?
A Virtual Private Cloud is your isolated network in AWS. You define CIDR blocks, subnets, routing, and gateways inside a Region.
Why should you care?
AwsVerse places all banking microservices in a private VPC with no public IPs on databases.
See it live — copy this example
Run in AWS CloudShell / local AWS CLI v2, or follow the matching steps in the AWS Console (Free Tier).
aws ec2 create-vpc \
--cidr-block 10.20.0.0/16 \
--tag-specifications 'ResourceType=vpc,Tags=[{Key=Name,Value=awsverse-prod-vpc}]'What happened?
- Creates a /16 VPC with 65k IP addresses.
- Follow with subnets, IGW, and route tables before launching workloads.
Practice next
- VPC console → Create VPC → VPC only, 10.0.0.0/16.
- Enable DNS hostnames and DNS resolution.
- Delete lab VPC when done — NAT costs add up.
- Create a second VPC peering candidate with 10.30.0.0/16 in a lab.
- Describe VPC: aws ec2 describe-vpcs.
Remember
VPC = your private network in AWS. Plan CIDR for growth and VPN. DNS settings matter for RDS endpoints.
AwsVerse network foundation
Greenfield banking platform needs isolation.
Outcome: Dedicated prod VPC with tiered subnets per environment.
Interview prep for this lesson
Practice these questions aloud after reading—each links to a full structured answer.
Sign in to ask a question or upvote helpful answers.
No questions yet — be the first to ask!
