Aina Georges enhanced concurrency support in the oxcaml/oxcaml repository by developing a Reader-Writer Lock and Shared Data APIs for OCaml capsules. Leveraging OCaml and C, Aina designed and implemented new APIs, map_shared and extract_shared, to enable safe, scalable concurrent access and manipulation of capsule data. The approach focused on concurrency control and system programming, introducing mechanisms that lay the foundation for future multi-threaded features. Comprehensive tests were included to ensure correctness and thread-safety, reflecting a careful, in-depth engineering process. This work addressed the need for robust concurrent data access, improving the reliability and scalability of the capsule system.