What is AWS?

Amazon Web Services (AWS) is the world's most comprehensive and broadly adopted cloud computing platform, offering over 200 fully-featured services from data centers globally.

Understanding AWS

AWS was launched by Amazon in 2006 and has grown to become the leading cloud computing platform, serving millions of customers worldwide, from startups to large enterprises and government agencies.

Key AWS Services

1. Compute Services

EC2 (Elastic Compute Cloud): Virtual servers in the cloud

Lambda: Serverless computing service

ECS/EKS: Container management services

2. Storage Services

S3 (Simple Storage Service): Object storage for data

EBS (Elastic Block Store): Block storage for EC2 instances

Glacier: Long-term archival storage

3. Database Services

RDS: Managed relational databases

DynamoDB: NoSQL database service

ElastiCache: In-memory caching service

4. Networking Services

VPC (Virtual Private Cloud): Isolated network environments

Route 53: DNS web service

CloudFront: Content delivery network

Basic AWS Architecture Example

yamlCODE

# AWS CloudFormation template
Resources:
  WebServer:
    Type: AWS::EC2::Instance
    Properties:
      ImageId: ami-12345678
      InstanceType: t2.micro
      SecurityGroups:
        - !Ref WebServerSecurityGroup
  
  WebServerSecurityGroup:
    Type: AWS::EC2::SecurityGroup
    Properties:
      GroupDescription: Security group for web server
      SecurityGroupIngress:
        - IpProtocol: tcp
          FromPort: 80
          ToPort: 80
          CidrIp: 0.0.0.0/0

AWS vs Other Cloud Providers

|---------|-----|-------|--------------|

| Service Count | 200+ | 100+ | 100+ |

| Global Regions | 25+ | 60+ | 35+ |

Why Use AWS?

Comprehensive Services: Wide range of services for any use case

Global Infrastructure: Data centers in multiple regions worldwide

Security: Enterprise-grade security and compliance

Scalability: Auto-scaling and load balancing capabilities

Cost-Effective: Pay only for what you use

Common Use Cases

Web Applications

Mobile Applications

Big Data Analytics

Machine Learning

IoT Applications

Enterprise Applications

Gaming Applications

AWS Pricing Model

Pay-as-you-go: Pay only for the services you use

Reserved Instances: Discount for long-term commitments

Spot Instances: Use spare capacity at discounted rates

Free Tier: Free usage for new customers

AWS Certifications

AWS Certified Cloud Practitioner

AWS Certified Solutions Architect

AWS Certified Developer

AWS Certified DevOps Engineer

AWS Certified Security Specialist

AWS continues to innovate and expand its services, making it the go-to choice for organizations looking to leverage cloud computing for their applications and infrastructure.