The recent unprecedented access to SAR observations, including those from ESA's Sentinel-1A/B satellites, has resulted in a remarkable increase in SAR data availability that will continue to grow with the forthcoming NASA NISAR mission. The scope and variety of these data has resulted in a golden age for SAR and InSAR results, providing enormous scientific opportunities coupled with significant technical and computational challenges. Here we solicit contributions detailing methods and strategies that address these opportunities and challenges, highlighting recent SAR and InSAR developments in the following areas: (1) Data processing techniques that take full advantage of the densely sampled time-series information and development of new data products; (2) Advances in big data analytics, deep learning and cloud-based processing techniques applied to SAR and InSAR, and development and distribution of value-added products; (3) submissions that focus on new frontiers of SAR and InSAR applications.