STARS is an acronym for five common business situations leaders may find themselves moving into: start-up, turnaround, accelerated growth, realignment, and sustaining success. The STARS model outlines the characteristics and challenges of, respectively, launching a venture; getting one back on track; dealing with rapid expansion; reenergizing a once-leading business that’s now facing serious problems; and inheriting an organization that is performing well and then taking it to the next level.