This architecture diagram represents a highly available and scalable WordPress deployment on Amazon Web Services (AWS).
It is designed to ensure performance, fault tolerance, and data durability while maintaining separation of concerns across different infrastructure layers.
The setup leverages AWS managed services and auto-scaling compute resources to handle varying workloads and traffic spikes efficiently.
The main goal of this architecture is to provide a resilient, fault-tolerant, and horizontally scalable environment for hosting WordPress.
It addresses common issues with traditional single-server setups such as:
- Downtime during traffic surges
- Data loss due to server failure
- Slow performance due to lack of caching or centralized storage
By implementing this design, WordPress can scale dynamically and maintain high uptime even under heavy load.
This layer handles the execution of application code (WordPress PHP files).
-
Amazon EC2 (Auto Scaling Group)
Hosts the WordPress application. EC2 instances automatically scale in or out depending on demand.
Each instance retrieves shared assets and media from a central storage location. -
Application Load Balancer (ALB)
Distributes incoming traffic evenly across all EC2 instances in the Auto Scaling Group.
Ensures no single instance becomes a bottleneck and provides health checks for availability.
The data layer handles caching, persistent storage, and database management.
- Amazon ElastiCache (Redis or Memcached)
Improves WordPress performance by caching frequently accessed queries and pages.
Reduces load on the database and speeds up response times.
-
Amazon EFS (Elastic File System)
Shared storage for WordPress files (e.g., themes, plugins, uploads).
Ensures all EC2 instances access the same file system, maintaining consistency. -
Amazon S3 (Simple Storage Service)
Used for offloading and storing static assets (images, media files, backups).
Highly durable and scalable object storage.
- Amazon RDS (MySQL)
Managed relational database service for WordPress data.
Includes:- Primary instance for write operations
- Failover instance for high availability and automatic recovery
- ✅ High Availability: Redundant components across multiple Availability Zones
- ⚡ Scalability: Auto Scaling and Load Balancing handle fluctuating workloads
- 🧩 Separation of Concerns: Independent compute, storage, and database layers
- 🔒 Resilience & Data Protection: Multi-AZ RDS deployment and centralized file storage
- 🚀 Performance Optimization: In-memory caching with ElastiCache
- Production-grade WordPress websites
- E-commerce or news platforms with variable traffic
- Multi-instance WordPress hosting environments
- Migration from single-server WordPress to AWS infrastructure
| Category | AWS Service | Purpose |
|---|---|---|
| Compute | EC2 + Auto Scaling Group | Runs WordPress and scales with demand |
| Networking | Application Load Balancer | Distributes traffic across EC2 instances |
| Storage | EFS, S3 | Shared and durable storage for files |
| Database | RDS (MySQL) | Managed relational database |
| Caching | ElastiCache | Accelerates data access and reduces DB load |
This architecture provides a modular, scalable, and reliable solution for hosting WordPress on AWS.
By decoupling application, storage, and data layers, it achieves:
- Minimal downtime
- Optimized performance
- Simplified maintenance
It is an ideal foundation for teams aiming to host WordPress in a cloud-native, enterprise-grade environment.
This project is licensed under the MIT License.
Ian Tumulak
https://iantumulak-website.vercel.app