This case study by Homa Bahrami and Victoria Chang explores the evolution and challenges faced by Mozilla Corporation during its growth, particularly focusing on the role of Debbie Cohen, the VP of People, in implementing a people strategy. As Mozilla transitioned from a small open-source project into a global organization with nearly 1,000 employees by 2013, it required new HR structures while maintaining its core values and open community ethos. The document emphasizes the unique talent dynamics at Mozilla, where a significant portion of contributions come from volunteers, highlighting the need for an adaptable approach to people operations.