Casting is the process of selecting actors for roles in a film, television show, or theater production. Directors and producers hold auditions where actors perform scenes to showcase their talent. The goal is to find the right person who fits the character's personality and story, ensuring the best possible performance. Once the casting is complete, the chosen actors are officially offered their roles. This can involve negotiations about contracts and schedules. Successful casting can significantly impact the overall quality of the production, as the chemistry between actors, like Tom Hanks and Meg Ryan in their romantic comedies, can create memorable moments on screen.