Introduction to Cloud Computing on AWS for Beginners

1. Introduction

   • Understanding the importance of cloud architecture in modern IT.
   • Overview of how cloud services can transform businesses by providing scalable, flexible, and cost-effective solutions.

2. Stateful VS Stateless Services

   • Stateful services maintain state information over time. Examples include databases and user sessions.
   • Stateless services do not retain any user context between requests. Examples include REST APIs and static web pages.

3. Horizontal VS Vertical Scaling

   • Horizontal scaling involves adding more machines (scaling out) to handle increased load.
   • Vertical scaling involves upgrading the existing machine with more CPU, memory, etc. (scaling up).

4. Load Balancing

   • The process of distributing incoming network traffic across multiple servers to ensure no single server bears too much load.
   • Helps in achieving high availability and reliability for applications.

5. Fault Tolerance

   • Designing systems to continue operating properly even in the event of the failure of some of its components.
   • Ensures uptime and availability of services, typically through redundancy and failover mechanisms.

6. Loose Coupling

   • Services are designed to interact with each other without being tightly bound, allowing for independent scaling and updates.
   • Promotes modularity and simplifies the integration of different services.

7. Monolithic and Microservices architecture

   • Monolithic architecture consists of a single codebase that encapsulates all the functionalities of an application.
   • Microservices architecture breaks down applications into smaller, independent pieces, each running in its own process and performing a specific task.

8. Event-driven Architecture

   • Architecture where components interact with events rather than direct integrations or API calls.
   • Components can subscribe to certain events and perform actions accordingly, leading to more scalable and responsive systems.

9. Amazon Elastic Compute Cloud (EC2)

   • A service that provides resizable compute capacity in the cloud.
   • Covers creating and configuring EC2 instances, securing them with security groups and access control lists, and integrating with AWS services like ELB and Auto Scaling for high availability and elasticity.

10. AWS Storage services

    • Discusses various storage options provided by AWS such as EBS (Elastic Block Store), S3 (Simple Storage Service), EFS (Elastic File System), etc.
    • Includes practical examples of setting up, managing, and securing these storage options.

11. AWS Databases

    • Overview of various database services offered by AWS like Amazon RDS (Relational Database Service), DynamoDB (NoSQL database service), etc.
    • Covers the setup, scaling, and management of databases with real-world examples.

12. Automation on AWS

    • Introduces automation in cloud environments and how to use AWS services like CloudFormation, Elastic Beanstalk for deploying applications and infrastructure.
    • Discusses the principles of CI/CD and tools like AWS CodePipeline to automate the release process.

13. DevOps on AWS

    • Explores the DevOps practices on AWS, emphasizing collaboration, integration, and automation among software developers and IT operations.
    • Provides an overview of AWS CodeStar and other related services for implementing a DevOps culture.

14. DNS Service & Content Delivery

    • Covers Amazon Route 53 as a scalable and highly available Domain Name System (DNS) web service.
    • Discusses content delivery networks, CDN, and how AWS services like CloudFront can be used to cache content closer to users for faster delivery.

15. Application Integration & Loose Coupling

    • Explains integration patterns such as using Amazon SNS (Simple Notification Service) and Amazon SQS (Simple Queue Service).
    • Demonstrates how AWS Lambda can be used in conjunction with these services to create event-driven, serverless applications.

16. How to get Certified on AWS

    • Provides guidance on the different certifications available from AWS, including the AWS Certified Solutions Architect and AWS Certified Developer Associate.
    • Offers tips on preparing for the exams, understanding the exam format, and the kind of knowledge and skills required to pass.

This roadmap provides a comprehensive overview of cloud architecture, focusing on AWS services. Each topic is designed to build upon the previous one, leading to a deeper understanding of how to architect robust, scalable, and efficient applications in the cloud.