To build a new podcasting feature for Facebook, I would start by conducting user research to understand the needs and preferences of our audience. This would include identifying the types of podcasts they listen to, how often they listen, and what features they would like to see in a podcasting platform. Based on this research, I would work with a cross-functional team to develop a roadmap for building the new feature. This would involve outlining the key features and functionality that we want to include in the podcasting platform, as well as setting timelines and milestones for development and launch. One key consideration for the new podcasting feature would be how it integrates with existing Facebook features, such as Groups and Pages. We would want to ensure that users can easily discover and share podcasts within these existing communities. Another important aspect of building a new podcasting feature would be ensuring that it is monetizable. This could include advertising opportunities for podcast creators, as well as potential subscription models for users. Overall, building a new podcasting feature for Facebook would require a deep understanding of our audience's needs and preferences, as well as a cross-functional team that can work together to develop and launch the new feature.