Compute Concepts

Compute is the part of cloud computing that runs your applications. It provides the processing power needed to execute code, handle requests, and perform tasks.

In cloud computing, there are three main compute options

Virtual Machines
Containers
Serverless

Each one offers a different level of control and abstraction.

1. Virtual Machines

A virtual machine is a software based computer that runs on physical hardware.

It has its own operating system, CPU, memory, and storage, just like a real computer.

Examples
Amazon Web Services EC2
Microsoft Azure Virtual Machines
Google Cloud Compute Engine

Example in real life
You create a virtual server, install Linux, Node.js, and MongoDB, and run your application.

Why use virtual machines
Full control over system
Can install any software
Flexible

Limitations
Need to manage operating system
Scaling can take time

2. Containers Basic Intro

Containers are lightweight environments used to run applications.

They do not include a full operating system. Instead, they share the host system but keep applications isolated.

Examples
Docker
Kubernetes

Example in real life
You package your app and its dependencies into a container and run it anywhere without worrying about system differences.

Why use containers
Lightweight and fast
Easy to deploy
Consistent across environments

Limitations
Requires some setup and knowledge
Needs orchestration for large scale systems

3. Serverless Basic Intro

Serverless means you run code without managing servers.

The cloud provider automatically handles infrastructure, scaling, and execution.

Examples
Amazon Web Services Lambda
Google Cloud Functions

Example in real life
You write a function that runs when a user uploads an image, and the cloud automatically executes it.

Why use serverless
No server management
Automatic scaling
Pay only for usage

Limitations
Limited control
Not suitable for long running tasks

4. Virtual Machines vs Containers vs Serverless

Virtual Machines
Full control
Heavyweight
Best for custom environments

Containers
Lightweight
Fast deployment
Best for modern applications

Serverless
No infrastructure management
Automatic scaling
Best for event based applications

Summary

Virtual machines act like real computers in the cloud

Containers provide lightweight and portable environments

Serverless allows you to run code without managing servers

These compute options help you choose how you want to build and run your applications based on control, performance, and ease of use.