If event RSVPs went up by 20%, there are several things I would consider doing as a product manager at Facebook. Firstly, I would analyze the data to determine what factors may have contributed to the increase in RSVPs. This could include looking at the types of events that saw the increase, the demographics of the users who RSVP'd, and any changes that were made to the events platform that could have influenced user behavior. Based on this analysis, I would work with the events team to optimize the platform for users and event organizers. This could include improving the user interface, adding new features to make it easier to create and manage events, and enhancing the discoverability of events for users. Additionally, I would explore ways to further promote events on the Facebook platform, such as through targeted advertising or partnerships with event organizers. This could help to increase awareness of events and drive more RSVPs. Finally, I would consider ways to enhance the overall event experience for users, such as by providing better event recommendations, offering exclusive perks for attending events, or enabling users to connect and engage with other attendees before and after the event. Ultimately, my goal as a product manager would be to leverage the increase in RSVPs to drive continued growth and engagement on the Facebook events platform.