At MongoDB, A. Jesse Jiryu Davis discusses the challenges and experiences of conformance checking, focusing on their experiments with MongoDB products to ensure that their implementations match TLA+ specifications. The paper details two key techniques: trace-checking and test-case generation. While trace-checking on the MongoDB server faced difficulties due to discrepancies between the spec and the code, test-case generation for the MongoDB Mobile SDK was more successful, uncovering a bug and achieving comprehensive test coverage. The text highlights lessons learned, such as the importance of ensuring spec and implementation alignment from the start and modeling observable events to facilitate trace-checking. Davis emphasizes the potential of conformance checking to enhance software reliability and is optimistic about future developments in this area. Additionally, the text includes a brief mention of MongoDB's leadership transition, with Dev Ittycheria stepping down as CEO and Chirantan "CJ" Desai being named as his successor, highlighting CJ’s qualifications and the strategic timing of the change for MongoDB's continued growth.