4. What is a program? What is a project portfolio? Discuss the relationship between projects, programs, and portfolio management and the contributions they each make to enterprise success. A program is "a group of projects managed in a coordinated way to obtain benefits and control not available from managing them individually" (PMBOK@ Guide, 2013) Project portfolio management focuses on managing projects as is as a portfolio of investments that contribute to the entire enterprise's success. Projects are part of programs which are part of portfolios