A cloud-based consultation and collaboration system for radiotherapy: Remote decision support services for community radiotherapy centers

•The system saves cost and time for both consultants and community radiotherapy centers.•The system is ubiquitously accessible in an ad hoc way.•The system utilized distributed and paralleling computing.•The online operations are streamlined efficiently due to the deep integration of comprehensive technical cores of radiotherapy planning.•Help the under-staffed community radiotherapy centers acquire decision support as demanded and elevate the quality of radiation treatment.