This chapter explores extended reality (XR) technologies, focusing on a framework for immersive experience design across virtual reality (VR), augmented reality (AR), and mixed reality (MR). Central to the chapter is the detailed exploration of a multi-layered framework designed to enhance the creation and evaluation of XR experiences. This framework is segmented into five crucial layers: Conceptual, visual, data, interactivity, and interoperability. The conceptual layer outlines the strategic vision and objectives, aligning the technology with user needs. The visual layer enriches this foundation with high-fidelity sensory inputs to maximise realism and immersion. The data layer leverages analytics to personalise the experience, adapting dynamically to user interactions and environmental changes. The interactivity layer focuses on creating intuitive user engagements through advanced interaction technologies. Lastly, the interoperability layer ensures that XR applications function seamlessly across various platforms and devices, facilitating a cohesive user experience. Illustrated through practical industry case studies, the framework demonstrates its applicability in real-world settings, emphasising its role in developing engaging, user-centric XR applications. The chapter underscores the importance of interdisciplinary collaboration in advancing XR technologies to meet the evolving demands of users and integrate smoothly into the broader digital ecosystem.