[12:15 AM] Dhivakar Radhakrishnan
The architecture slide for the Oshawa Public Library scenario includes several AWS services:
 
1. **Amazon WAF (Web Application Firewall)**:

   - **Basic Definition**: Protects web applications from common web exploits.

   - **Use**: Secures the application from malicious attacks.

   - **Advantages**:

     - Customizable web security rules.

     - Real-time threat protection.

     - Integration with AWS services.
 
2. **Amazon Route 53**:

   - **Basic Definition**: A highly available and scalable cloud Domain Name System (DNS) web service.

   - **Use**: Manages the domain’s DNS records, ensuring efficient traffic routing.

   - **Advantages**:

     - Reliable and cost-effective.

     - Scalable.

     - Traffic flow management.
 
3. **IAM (Identity and Access Management)**:

   - **Basic Definition**: Manages access to AWS services and resources securely.

   - **Use**: Controls who is authenticated and authorized to use resources.

   - **Advantages**:

     - Granular permissions.

     - Secure access management.

     - Integrates with other AWS services.
 
4. **Amazon CloudFront**:

   - **Basic Definition**: A fast content delivery network (CDN) service.

   - **Use**: Speeds up distribution of static and dynamic web content.

   - **Advantages**:

     - Global content delivery.

     - Security at the edge.

     - Customizable.
 
5. **S3 (Simple Storage Service)**:

   - **Basic Definition**: Object storage service offering scalability, data availability, and security.

   - **Use**: Stores images related to library assets.

   - **Advantages**:

     - High durability and availability.

     - Scalable storage infrastructure.

     - Cost-effective.
 
6. **Application Load Balancer**:

   - **Basic Definition**: Automatically distributes incoming application traffic across multiple targets.

   - **Use**: Balances load of user traffic.

   - **Advantages**:

     - Improved availability.

     - Flexible load balancing.

     - Supports container-based applications.
 
7. **NAT Gateway**:

   - **Basic Definition**: Allows instances in a private subnet to connect to the internet.

   - **Use**: Enables internet access for private subnets.

   - **Advantages**:

     - Secure and controlled internet access.

     - Scalable.
 
8. **Auto Scaling Group**:

   - **Basic Definition**: Automatically adjusts the number of EC2 instances.

   - **Use**: Manages the scalability and availability of the application.

   - **Advantages**:

     - Cost-effective scaling.

     - Maintains performance.

     - Automatic scaling.
 
9. **RDS (Relational Database Service)**:

   - **Basic Definition**: Web service for setting up, operating, and scaling a relational database.

   - **Use**: Manages PostgreSQL database.

   - **Advantages**:

     - Simplified database setup.

     - Scalable.

     - Automated backups.
 
10. **Amazon CloudWatch**:

    - **Basic Definition**: Monitoring and observability service.

    - **Use**: Monitors and logs the performance of AWS resources.

    - **Advantages**:

      - Real-time monitoring.

      - Customizable alerts.

      - Integrated with AWS.
 
Each service is crucial for maintaining the functionality, security, and performance of the library's web application.
[12:36 AM] Dhivakar Radhakrishnan
The architecture slide provides a comprehensive view of how various AWS services are interconnected and function together:
 
1. **Amazon VPC**: Acts as the backbone, hosting all components in a secure, isolated network. It connects to different services ensuring secure and efficient network management.
 
2. **Amazon EC2**: Hosts application servers. It works closely with the load balancer for traffic distribution and CloudWatch for monitoring.
 
3. **Amazon S3**: Used for static asset storage. Integrated with CloudFront for content delivery and EC2 for asset access.
 
4. **Amazon RDS**: Hosts PostgreSQL database, essential for data storage and retrieval. Interacts with EC2 for backend data processing.
 
5. **Amazon CloudFront**: Distributes content with low latency. Works in conjunction with S3 for data delivery and WAF for security.
 
6. **Amazon Route 53**: Manages DNS and routes traffic. Essential for directing user requests to the appropriate EC2 instances or CloudFront distribution.
 
7. **Amazon WAF**: Provides web application security, integrated with CloudFront to protect against threats.
 
8. **NAT Gateway**: Enables secure internet access for EC2 instances in private subnets, essential for updates and secure data transmission.
 
9. **Application Load Balancer**: Distributes traffic across EC2 instances, ensuring high availability and fault tolerance.
 
10. **Auto Scaling Group**: Dynamically adjusts EC2 capacity, interacting with CloudWatch for performance metrics.
 
11. **Amazon CloudWatch**: Monitors the performance of AWS resources and applications, integrated with EC2 for performance metrics and Auto Scaling for resource management.
 
12. **IAM (Identity and Access Management)**: Manages access to AWS services, ensuring secure and controlled access across the architecture.
 
Each service is strategically integrated to optimize performance, security, and scalability of the cloud infrastructure.