The Heterogeneous Integration Roadmap (HIR) is a roadmap to the future of electronics identifying technology requirements and potential solutions. The primary objective is to stimulate pre-competitive collaboration among industry, academia and government to accelerate progress. The roadmap offers professionals, industry, academia and research institutes a comprehensive, strategic forecast of technology over the next 15 years. The HIR also delivers a 25-year projection for heterogeneous integration of emerging devices and materials with longer research-and-development timelines.