Explore the latest enhancements and extensibility options for customizing the Excel grid and calculations engine in this 31-minute video from Microsoft Build 2022. Discover how to create custom data types containing images, entities, arrays, and formatted number values backed by custom data sources. Learn about the new API that enables developers to build custom functions utilizing these Excel Data Types as inputs and outputs. Gain insights into Office Add-ins, data type anatomy, feature integration, and APIs. Watch a demonstration of the new capabilities and hear from CCP Games about their integration of Excel add-ins in EVE Online. Understand how these advancements can increase developer velocity and enhance user experiences in data-driven applications.