AWS VPC Fundamentals: Public Subnets and Internet Gateways

To build secure and scalable cloud applications, you must understand how network traffic flows between your resources and the public internet. This text-based course breaks down the core networking concepts of AWS Virtual Private Cloud (VPC), focusing on how to establish reliable external connectivity. You will progress from foundational cloud networking definitions to configuring active, accessible environments. By completing this course, you will gain a practical understanding of cloud infrastructure layout, enabling you to confidently architect public-facing cloud environments that adhere to modern security standards. What you'll learn: - Understand core VPC components, including IP addressing, CIDR blocks, and subnetting principles - Configure Internet Gateways to enable two-way communication between your VPC and the outside world - Design and manage route tables to direct public traffic correctly and securely - Implement fundamental security measures using Network Access Control Lists (NACLs) and Security Groups - Apply modern zero-trust security concepts to restrict public exposure to only necessary resources - Troubleshoot common connectivity issues within public subnets using cloud-native diagnostic tools This course begins with clear explanations of essential networking terminology before guiding you through step-by-step configuration workflows. You will learn how to plan your network range, deploy a public subnet, attach an internet gateway, and verify routing paths through clear, written instructions. This course is designed specifically for beginners in cloud engineering, system administration, or DevOps, with no prior networking experience required. Start building your foundation in AWS networking today.