Overview: This course, as part of the CCI4EU project, aims to improve cancer care capabilities in European countries. It is the first of ten online sessions dedicated to developing effective cancer infrastructures. Goals: Understand the components and operations of Comprehensive Cancer Infrastructures (CCIs). Learn how CCIs enhance patient care and support research. Explore successful CCI case studies. Key Topics: -What is a Comprehensive Cancer Infrastructure (CCI)? -The Importance of CCIs -CCI Structure and Differences from CCCs -Improving Care through Research -Education, Training, and Multidisciplinary Care -Formation of a CCI: Case Studies