Delphi XE8 enhances developer productivity by allowing the creation of native applications for multiple devices from a single codebase, streamlining the app development process for platforms like Windows, Mac, iOS, and Android. Features include a multi-device designer for UI, connectivity to enterprise data and cloud services, and support for enterprise mobility services, ensuring secure app access. The platform is positioned as a robust solution for developing connected apps in the rapidly evolving landscape of the Internet of Things.