protechanalysis

Service Name	Instance Type / Configuration	Monthly Cost (USD)
Amazon EC2	t3a.xlarge (2 instances)	109.35
Amazon EC2	t2.nano (1 instance)	2.12
Amazon RDS for PostgreSQL	db.m5.large (2 nodes)	565.46
Amazon Redshift	ra3.large (2 nodes)	792.78
Amazon ElastiCache (Redis)	cache.t3.micro (2 nodes)	24.82
Amazon VPC	(1 NAT Gateway)	33.08
Elastic Load Balancing (ALB)	(1 Application Load Balancer)	22.27
Total Monthly Cost		**1,549.88

protechanalysis

├── .github/
│   └── workflows/
│       ├── ci.yaml             # Continuous Integration (CI) checks
│       ├── cd.yaml             # Continuous Deployment of infrastructure
│       └── cd_dag.yaml         # Continuous Deployment (CD) for Airflow DAGs
│
├── bootstrap_scripts/          # Helper shell scripts for local install and startup
│
├── orchestration/

protechanalysis

Folder/File	Primary Function	Engineering Rationale
bootstrap_scripts/	Automated Airflow Host Setup	Automation: Custom bash scripts are executed by the EC2 User Data. They automatically install Docker/Compose, configure Airflow environment variables, and launch the containerized HA cluster on boot — ensuring the system is self-healing and

protechanalysis

Workflow File	Purpose	Key Actions and Expertise Demonstrated
cd.yaml / ci.yaml	Continuous Integration (CI)	Gatekeeping and Quality Control: Runs terraform validate, executes terraform plan (for peer review), performs Python unit tests (tests/), and runs linti

protechanalysis

Component	Service Used	Resilience and Control Rationale
Orchestration Compute	Multiple Airflow EC2 Instances	Control. I deployed 2+ EC2 instances across different Availability Zones (AZs) running Airflow components (Scheduler, Workers) via Docker Compose. This ensures I maintain full control over the runtime environment and necessary libraries.
Metadata Database	Amazon RDS (Po