The Community College Academic and Student Support Ecosystems (CCASSE) project examines how academic and student support services at not-for-profit associate-degree granting colleges are organized, funded, and staffed, and how these services can most effectively advance student success. In spring 2019, Ithaka S+R surveyed 249 chief academic and student affairs officers at community colleges across the United States on success measures, services offered, resource challenges and constraints, and vision for future service provision. This report details the findings from the first phase of the CCASSE project, the survey of chief senior administrators in academic and student affairs, which investigates the current structure and provision of services at two-year colleges. [For part 2, "Student Focused: Fostering Cross-Unit Collaboration to Meet the Changing Needs of Community College Students. Research Report," see ED625623. For part 3, "Library Strategy and Collaboration across the College Ecosystem: Results from a National Survey of Community College Library Directors. Research Report," see ED625668.]