🏗️ AWS Secure & Scalable Infrastructure for Web Application

This project demonstrates a secure, scalable, and highly available AWS architecture designed for hosting modern web applications. It includes core AWS services like EC2, RDS, ElastiCache, EFS, S3, CloudFront, and IAM best practices.

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📌 Key Components

🔹 VPC & Subnets

• Custom VPC with both public and private subnets
• NAT Gateway for internet access from private subnet resources
• Internet Gateway (IGW) for public access

🔹 Security & Access

• Bastion Host in the public subnet for secure SSH access
• Private Subnet resources only accessible via Bastion or ALB

🔹 Compute Layer

• Auto Scaling Group of EC2 instances running the web application
• Elastic File System (EFS) for shared storage across EC2s

🔹 Data Layer

• Amazon RDS (MySQL/PostgreSQL) in private subnet
• Amazon ElastiCache (Redis) for application-level caching

🔹 Object Storage & CDN

• Amazon S3 for static asset hosting and application data
• Amazon CloudFront as CDN for secure, faster global delivery

🔹 Monitoring & Auditing

• AWS CloudTrail for API logging
• AWS Backup for centralized backup management

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⚙️ Use Cases

• Hosting containerized or traditional web apps with shared storage
• High availability web architecture with strong security isolation
• Scalable backend APIs or microservices architectures

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✅ Best Practices Followed

• 🔐 Private subnets for all critical components
• 📈 Auto Scaling for compute layer
• 🧹 Bastion Host for secure admin access
• 🧾 Logging and audit via CloudTrail
• 💾 Centralized backups using AWS Backup
• 🚀 Global delivery via CloudFront CDN

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