Palliative care began in academic centers with specialty consultation services, and its value to patients, families, and health systems has been evident. The demand for palliative care to be integrated throughout the cancer trajectory, combined with a limited palliative care workforce, means that new models of care are needed. This review discusses evidence regarding the need for integration of palliative care into routine oncology care and describes best practices recognized for dissemination of palliative care. The available evidence suggests that palliative care be widely adopted by clinicians in all oncology settings to benefit patients with cancer and their families. Efforts are needed to adapt and integrate palliative care into community practice. Limitations of these models are discussed, as are future directions to continue implementation efforts. The benefits of palliative care can only be realized through effective dissemination of these principles of care, with more primary palliative care delivered by oncology clinicians.