Recommendation systems are specialized algorithms used to predict and display items a user might prefer, based on their past interactions and preferences. These systems are pivotal in various industries, especially in e-commerce and entertainment, where they help personalize user experiences and increase satisfaction. By analyzing vast amounts of data, recommendation systems can tailor content, products, or services to individual tastes, thereby driving engagement and sales. They utilize methods like collaborative filtering, content-based filtering, and machine learning to provide accurate and relevant suggestions.