Our PrepPack™ fully covers all three IST sections and, when needed, adds English-proficiency and personality practice to round out your preparation. After testing, you’ll typically move into a behavioral STAR interview—discussing real challenges, your goals, the actions you took, and the results you achieved—followed, for certain roles, by a technical interview (e.g., Software, Systems, Data, PC Refresh) focused on job-specific concepts and problem-solving.