Week 10 Worklog
Week 10 Objectives:
- Solution Architecture: Refine both High-Level (HLD) and Low-Level (LLD) diagrams aligned with the AWS Well-Architected Framework.
- Resource Planning & Cost Estimation: Develop an understanding of Total Cost of Ownership (TCO) and evaluate service options for efficiency.
- Network Foundation: Lay down the initial networking environment including VPCs, subnets, and basic security mechanisms.
Activities Undertaken This Week:
| Day | Activity | Start Date | Completion Date | Reference |
|---|
| 2-3 | Architecture & Planning:
- Reviewed business requirements and identified critical components.
- Drafted system architecture diagrams illustrating resource flows.
- Estimated costs using AWS Pricing Calculator and considered cost-saving measures.
- Checked alignment with the 5 pillars of the Well-Architected Framework. | 10/11/2025 | 11/11/2025 | |
| 4-5 | Infrastructure Initialization (IaC):
- Developed Terraform/CloudFormation scripts to provision VPC, Public/Private Subnets, NAT Gateway, and Route Tables.
- Configured Security Groups for Bastion Hosts, Application Servers, and Databases following best practices. | 12/11/2025 | 13/11/2025 | |
Week 10 Reflection: Architecture and Network Foundations
1. Architecture Design Insights
- Diagrammatic Representation: Successfully completed data flow and resource layout diagrams, following a Single-AZ setup for simplicity during the initial phase.
- Service Decisions:
- Relational Database: Chose RDS MySQL with Multi-AZ for resilience.
- Storage: S3 for static files and backups.
- Cost Awareness: Developed a preliminary monthly cost estimate and identified optimization strategies, such as leveraging Spot Instances in development and applying Savings Plans in production environments.
2. Networking & Security Foundation
- VPC Setup: Established a well-structured VPC with clear separation between Public and Private subnets for applications and databases.
- Security Implementation: Applied least privilege principles in Security Group configurations to protect bastion, web, and database layers.
Overall, this week laid the groundwork for both architectural clarity and a secure, operational network environment, setting the stage for further deployments and service integrations.