Lithium niobate on insulator (LNOI) technology, for electro-optical modulation and acoustic wave filtering in next-generation optical and wireless communications, is driving optoelectronic device performance to new heights. Hybrid integration allows LNOI to be an enabling technology for optical computation, microwave photonics, and quantum information, with large-scale photonic integration, high optical reconfigurability, and strong nonlinear interaction at the single photon level. Key areas of future research identified: large-size low-defect thin film lithium niobate wafer and high-performance device fabrication.