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IntermediateCloud

AWS VPC Deep Dive: Mastering Network Architecture

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Est. Time
60 min
Difficulty
Intermediate
Amount
FREE

Problem statement

Understanding how to build a Virtual Private Cloud shouldn't be complicated for professionals or students. Build a VPC Labs ensures this. Build a VPC Labs facilitates learning right from the starting point. Users practically go through different stages — with understanding customization as the first step. While the default AWS VPC, an acronym for Virtual Private Cloud, is widely available and accessible; architecting a tailored solution gives a more liberated feel. Users, in Build a VPC Labs, also learn to create public and private subnets across different Availability Zones. Hands-on experience further covers configuration of an Internet Gateway, creation of route tables, and associating subnets appropriately to build a secure & scalable network architecture. The lab then goes a step further — deploying a Bastion Host, Backend Server, and Database Server into the network, complete with least-privilege Security Groups and a NAT Gateway for controlled outbound access, so users see the VPC actually put to work rather than left empty. Start right away to gain practical understanding and earn a certificate at the end.

Problem Solved

You are a cloud network engineer at an organization which is migrating its applications to AWS. Instead of relying on the default VPC, your team requires a custom network architecture that follows industry best practices for security, scalability, and high availability. The architecture must separate internet-facing resources from internal services while supporting future application growth. Your task is to create a custom Amazon VPC, design public & private subnets across multiple Availability Zones, configure an Internet Gateway for external connectivity, create route tables, and associate them with the appropriate subnets. Once the network foundation is in place, you must also deploy the organization's first workloads onto it — a Bastion Host for secure administrative access, a Backend Server to run the application layer, and a Database Server to hold internal data — each locked down with tightly scoped Security Groups and routed correctly between public and private layers.

Key Benefits & Skills

By the end of this lab, you will be able to:

  • Create a custom Amazon VPC from scratch
  • Design and configure public and private subnets across multiple Availability Zones
  • Attach and configure an Internet Gateway for public internet access
  • Create and configure route tables for public and private networking
  • Associate route tables with the appropriate subnets
  • Understand VPC networking concepts, CIDR block planning, and subnet segmentation
  • Design least-privilege Security Groups using SG-to-SG referencing instead of open CIDR ranges
  • Configure a NAT Gateway to give private resources controlled, outbound-only internet access
  • Deploy a Bastion Host, Backend Server, and Database Server across public and private subnets
  • Verify secure, multi-hop connectivity from a public entry point into private instances
  • Build a secure and scalable network foundation for AWS workloads

Recommended Prerequisites

Build VPC From Scratch

What Has Been Concluded From This Lab

You learnt about VPC into a working three-tier network by deploying a Bastion Host in the Public Subnet, and a Backend Server and Database Server in the Private Subnets. You created dedicated Security Groups scoped to least-privilege access (SG-to-SG references instead of open CIDR ranges), added a NAT Gateway so private resources retain outbound-only internet access, and verified end-to-end connectivity by hopping from the Bastion Host into your private instances. This setup reflects a production-style AWS architecture: internet-facing components isolated in the Public Subnet, sensitive application and data layers locked away in Private Subnets, and all administrative access funnelled securely through a single hardened entry point.