AWS Network Firewall
AWS Network Firewall lets you deploy network security across Amazon VPCs with minimal clicks. It handles stateful and stateless rule groups to filter traffic, providing a centralized way to manage security policies for your virtual private clouds without complex manual configuration.
This fits teams already deep in the AWS ecosystem who need managed firewall capabilities. However, there is no free tier, so you pay for every hour the firewall runs plus data processing. Expect a straightforward pay-as-you-go bill that scales with your traffic volume and rule complexity.