Solution architectures

Typical 3 tier solution architecture

LAMP Stack on EC2

Linux: OS for EC2 instances
Apache: Web Server that run on Linux (EC2)
MySQL: database on RDS
PHP: Application logic (running on EC2)
Can add Redis / Memcached (ElastiCache) to include a caching tech
To store local application data & software: EBS drive (root)

WordPress on AWS

https://aws.amazon.com/blogs/architecture/wordpress-best-practices-on-aws/