The Building Digital Cities Lab featured digital experts who discussed how mayors could transform their cities' local innovation hubs run by data-driven systems, digitally-enabled businesses, and skilled talent. Over the last two years, the world has witnessed and undergone an accelerated shift towards digital innovation. With the latest technological advancements, local leaders have utilized data and technology to deliver and improve their public services effectively. On the other hand, citizens have gained more access to information and demand more transparency from their local governments. Experts emphasized that the key to building these digital cities ultimately is public-private collaboration.