As I dive deeper into AWS, I’ve been exploring the networking side of cloud — and it’s fascinating! Networking is what makes all AWS services talk to each other securely and efficiently. Here’s what I learned 👇

Virtual Private Cloud (VPC)

Think of a VPC as your own private section of AWS. It’s like having a personal data center in the cloud, where you control networking, security, and resources.

Inside a VPC, you can set up:

Subnets → Smaller sections within your VPC (like dividing a city into neighborhoods).
Route Tables → Define how traffic flows in and out of your VPC.
Internet Gateway → A door that allows your VPC to connect to the internet.

VPC Peering

A VPC peering connection allows two VPCs to communicate with each other using private IP addresses.

- Example: If your company has two departments with their own VPCs (Finance and HR), you can set up VPC peering so their applications can talk securely.

AWS Transit Gateway

Here’s where things get interesting! Instead of creating multiple peering connections (which gets complicated as you scale), AWS offers Transit Gateway.

Think of it as a central hub that connects all your VPCs and even on-premises networks.

It simplifies networking.
It’s scalable and acts like a big cloud router.
Each new VPC or network connects only once, and Transit Gateway handles the rest.

- Example: ByteConnect Inc. is expanding fast. Each department runs its own VPC. Instead of peering every VPC with every other VPC, a Transit Gateway makes all of them connect through a single hub.

Monitoring with CloudWatch

Managing infrastructure isn’t just about creating it — you need to monitor it too. That’s where CloudWatch comes in.

I tried a small project:

Launched an EC2 instance and deployed an Nginx web server.
Integrated it with CloudWatch to monitor logs and system metrics.
Now, I can see traffic, errors, and performance in real time.

This is super useful for any production environment where uptime and reliability matter.

Key Takeaways

VPC = Your private cloud playground.
Subnets, Route Tables, IGW = Building blocks of networking inside a VPC.
VPC Peering = Simple way to connect two VPCs.
Transit Gateway = The scalable way to connect many VPCs.
CloudWatch = Keeps an eye on your AWS resources and logs.

Networking and monitoring might sound complex, but AWS makes it flexible and scalable with the right tools. 🚀

Next up, I’ll be diving deeper into automation and security within AWS networking. Have you worked with Transit Gateway or CloudWatch before? Would love to hear your experience!

🌐 Getting Started with AWS VPC, Peering, Transit Gateway & CloudWatch