During April 2025, Batool Fatima enhanced the awslabs/landing-zone-accelerator-on-aws repository by expanding customization options for AWS Config rules. She developed a new TypeScript interface model for CustomRule, formalizing Lambda-based custom rule configurations and enabling more flexible rule definitions. Her refactor of the ConfigRule component allowed customRule to be undefined, reducing friction for optional rule setups and improving maintainability. Batool updated documentation using typedoc to clarify the new interface, ensuring better type safety and developer experience. Her work demonstrated depth in AWS, Infrastructure as Code, and TypeScript, focusing on extensibility and clarity without introducing unnecessary complexity or bugs.