Virtual Private Cloud (VPC).

Imagine you built an application and deployed it on the cloud

Now your system has:

• Servers
• Databases
• Storage

But here’s the problem
Everything is exposed to the public internet

That means:

• Security risks
• Unauthorized access
• Data breaches

Now imagine creating your own private network inside the cloud

Only authorized users can access
Full control over traffic
Secure communication

That’s exactly what a Virtual Private Cloud (VPC) provides

Concept: What is VPC?

A Virtual Private Cloud (VPC) is a private, isolated network within Google Cloud where you can run your resources securely.

It acts like your own data center network in the cloud

Key Components of VPC

1. Subnets

• Divide network into smaller parts
• Organized by regions

2. IP Addresses

• Each resource gets a unique IP

3. Firewall Rules

• Control incoming & outgoing traffic

4. Routes

• Define how traffic flows

Public vs Private Access

Technical Example (Create VPC)

Create subnet:

How VPC Works

1. Create a VPC network
2. Define subnets
3. Launch resources inside it
4. Apply firewall rules for security

Real-Life Examples

1. Secure Application Hosting

• Public frontend
• Private backend

2. Banking Systems

• Sensitive data in private network
• Restricted access

3. Corporate Networks

• Employees access internal services securely

4. Microservices Communication

• Services talk internally without exposure