Silicon has been successful in electronics because it can be doped to achieve differential functionality and can make very effective controllable switches. What is the equivalent in photonics? Phase change materials could be the equivalent functional material in photonics - they are switchable, tunable, and importantly, scalable and already have been commercialized in multiple other technologies. Phase Change Materials-Based Photonic Computing provides a clear introduction to this field introducing concepts of photonics, computing, phase change materials and future outlooks. Phase change materials are well known and studied in many contexts. Photonics is a long-standingfield, indeed the use of photonic neuromorphic computing has recently gathered much interest. However, these two fields are disparate and few people understand the key concepts and issues to integrate these two. This book will be the first to do so in this promising field. Phase Change Materials-Based Photonic Computing is suitable for researchers and practitioners in academia and industry working in the disciplines of materials science and engineering, electrical engineering, and computing.