ICMC congresses take place every two to three years. Congresses span span a few days and include cutting-edge and educational keynotes from international experts in the microbiome and oncology as well as round-table discussion between to generate expert consensus on questions of interest. Congresses are an excellent way for clinicians, academics and other stakeholders to discover more about the microbiome in the context of oncology and to network with like-minded people. we also engage actively with industry to support their interest in leveraging the microbiome for patient benefit.