PIAZZA is a local social networking service (SNS) in Japan that aims to create and strengthen local communities both online and offline. The document discusses how PIAZZA works with local governments and businesses to digitally transform local advertising markets from traditional paper-based methods to an online platform. It also outlines PIAZZA's unique strategies of building real-world connections between users, quantifying community engagement metrics, and forming strategic partnerships. This allows PIAZZA to potentially unlock new revenue opportunities in the large but under-digitized local advertising market.