I appreciate the simplicity of your architecture for a public web server on AWS, but I have some significant concerns regarding security and scalability. While the use of a public subnet with an Internet Gateway allows for direct access to your EC2 instance, this setup poses serious security risks. Specifically, exposing your web server directly to the internet without a proper Web Application Firewall (WAF) or additional security measures increases the vulnerability to attacks such as DDoS or application layer threats. Additionally, I notice there is no mention of auto-scaling or load balancing in your design. This absence could lead to performance bottlenecks during traffic spikes, affecting user experience and availability. It is also important to consider a backup strategy or a multi-AZ deployment to ensure fault tolerance. In production, these risks could lead to service outages, data breaches, or increased operational costs due to unplanned downtime. I recommend enhancing your architecture with security best practices and considering scalability options from the outset.