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Welcome to Day 06 of my #100DaysOfAWS journey! ☁️ If you missed Day 05, where we looked at the high-level concepts of VPC, check it out here: https://youtu.be/Bmh9qBTEowU Project Resources: GitHub Repository: https://github.com/Priyanshu885588/100-days-100-aws-projects/blob/main/day06-VPC%20Architecture%20%E2%80%94%20Public%20%26%20Private%20Subnets/README.md CIDR Cheat Sheet: https://github.com/Priyanshu885588/100-days-100-aws-projects/blob/main/day06-VPC%20Architecture%20%E2%80%94%20Public%20%26%20Private%20Subnets/CIDR.md In today’s "Cloud Story," we are moving away from the "Default VPC" and designing a Production-Grade Blueprint. Most beginners fail because they don't understand the network—today, we fix that. We are deep-diving into CIDR notation, calculating IP ranges, and architecting a 2-tier system that separates your "Public Front Porch" from your "Private Vault." This is exactly how senior architects design secure systems in the real world. What You Will Learn Today: ✅ VPC Design: Why a /16 is the "Grand Plot of Land" for your architecture. ✅ CIDR Math Simplified: How to slice a 10.0.0.0/16 network into /24 subnets without the headache. ✅ The AWS 5-IP Rule: Why you actually get 251 usable IPs instead of 256. ✅ Public vs. Private Subnets: The logic behind keeping your database invisible to hackers. ✅ Security Group Chaining: Learning the "Chain of Trust" to lock down your internal traffic. Learning Resources: Understanding CIDR: https://www.geeksforgeeks.org/classless-inter-domain-routing-cidr/ AWS VPC Subnetting: https://docs.aws.amazon.com/vpc/latest/userguide/configure-subnets.html 🕒 Timestamps: 0:00 - Why Default VPCs are Dangerous 0:23 - Understand Project VPC Architecture 5:00 - CIDR Deep Dive: Breaking down 10.0.0.0/16 10:16 - Security Group Chaining: The Pro Secret 10:58 - Summary & What's coming on Day 07! 🌟 About the Series: I am building 100 AWS projects in 100 days to go from cloud beginner to AWS Architect. Each video is a hands-on project designed to teach practical skills used in real DevOps, SRE, and Cloud Engineering roles. Follow the Journey: Instagram/Twitter: [Your Social Links] GitHub: https://github.com/Priyanshu885588 Stay ahead with AWS — Subscribe and build your cloud story with me! 🔔 #AWS #100DaysOfAWS #VPC #CIDR #Networking #CloudSecurity #CloudStories #PriyanshuMandani #DevOps #CloudArchitect #LearnInPublic #AWSNetworking
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