Tutorials Cloud Computing Tutorial
Subnets — Complete Guide
Subnets — Complete Guide: free step-by-step lesson with examples, common mistakes, and interview tips — part of Cloud Computing Tutorial on Toolliyo Academy.
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Cloud Computing Tutorial · Lesson 12 of 100
Subnets
Foundations → Platform → Ops → Projects
Foundations · 1 — Cloud & networks · ~6 min · Cloud — Networking & Infrastructure
What is this?
Subnets slice a VPC into AZ-scoped segments for routing and blast-radius control.
Why should you care?
CloudVerse places load balancers, apps, and databases in different subnets.
See it live — copy this example
Use AWS/Azure/GCP free tier or local Docker/Kind. Sketches and YAML are meant to be typed and adapted.
# terraform-ish idea
# subnet_public_a = 10.0.0.0/24 az-a
# subnet_app_a = 10.0.10.0/24 az-a
# subnet_app_b = 10.0.11.0/24 az-bWhat happened?
- Subnet size must fit growth.
- Route tables decide internet access.
- Pair with security groups/NSGs.
Practice next
- Create two AZ app subnets.
- Associate route tables.
- Place a VM in private subnet.
- Calculate IPs needed for 50 pods.
- Add data subnet.
Remember
AZ-scoped slices. Routes matter. Size for growth.
CloudVerse multi-AZ subnets
App subnets in two AZs.
Outcome: HA layout ready for load balancers.
Interview prep for this lesson
Practice these questions aloud after reading—each links to a full structured answer.
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