Diversity, equity, and inclusion (DEI) aren’t just single initiatives or individual programs for SITC: they are a core value, integrated into everything the society does and led by a passionate committee of dedicated volunteers. The committee strategically advises the SITC Board of Directors on ways to develop opportunities for research, education, and professional development that promote diversity, equity, and inclusion within the society and field of cancer immunotherapy. As an extension of SITC DEI values, SITC changed membership and program accessibility for individuals living in low- and lower-middle income economies (LMIEs), eliminating barriers to SITC’s education to researchers and clinicians worldwide.