Introduction
Goal of This Lesson
By the end of this lesson, you will:
- Understand what AWS is
- Learn why AWS is widely used
- Get familiar with basic AWS concepts
What is AWS?
AWS stands for Amazon Web Services.
It is a cloud computing platform that allows you to use servers, storage, databases, and many other services over the internet.
Instead of buying physical servers, you can rent computing resources on demand.
AWS Overview Video
Why Use AWS?
AWS is popular because it offers:
- Scalability (increase or decrease resources anytime)
- Pay-as-you-go pricing
- High reliability and security
- Global availability
Remember
With AWS, you only pay for what you use.
What is Cloud Computing?
Cloud computing means using computing resources over the internet instead of your own computer or local servers.
Examples of cloud resources:
- Virtual servers
- File storage
- Databases
- Networking
example Real World Scenario
A startup launches a website on AWS and increases server capacity automatically when traffic grows.
AWS Global Infrastructure
AWS operates from multiple locations around the world.
Key components:
- Regions – Geographic locations (e.g., Mumbai, London)
- Availability Zones – Isolated data centers within a region
This setup improves:
- Performance
- Fault tolerance
- Disaster recovery
Core AWS Services
Some commonly used AWS services include:
- EC2 – Virtual servers in the cloud
- S3 – Object storage for files
- RDS – Managed relational databases
- IAM – User access and permissions
Pro Tip
You do not need to learn all AWS services at once. Start with EC2, S3, and IAM.
AWS Pricing Model
AWS follows a pay-as-you-go model.
You are charged based on:
- Compute time
- Storage used
- Data transfer
warning Caution
Always monitor your usage to avoid unexpected bills.
Who Uses AWS?
AWS is used by:
- Startups
- Large enterprises
- Governments
- Educational institutions
Companies use AWS to build:
- Websites and APIs
- Mobile backends
- Data analytics systems
- AI and machine learning applications
Exercise
Answer the following:
- What does AWS stand for?
- Name any two AWS services
- Why is cloud computing better than physical servers?