As a Facebook Product Manager, designing a new app for local businesses would involve several key steps. First, I would research and analyze the needs of local businesses in different regions. This would involve conducting market research, talking to local business owners, and examining data on consumer behavior to understand what types of services and features local businesses would find most valuable in an app. Next, I would work with a team of designers and developers to create a prototype of the app. This would involve designing a user interface that is intuitive and easy to use, as well as incorporating features that meet the needs of local businesses, such as the ability to manage their online presence, track customer engagement, and offer promotions or discounts. Once the prototype is complete, I would conduct extensive user testing to ensure that the app meets the needs of local businesses and is easy for them to use. This would involve working with a variety of local businesses in different regions to gather feedback and make adjustments to the app based on their input. Finally, I would work with the Facebook marketing team to develop a launch strategy for the app, including identifying key markets and developing a marketing campaign to promote the app to local businesses. Ongoing support and updates would also be necessary to ensure that the app continues to meet the needs of local businesses and remains a valuable tool for them to use.