Artificial intelligence is increasingly playing a crucial role in helping users find products that are well suited to their interests, tastes and wishes. Nowadays users deal with a huge amount of data when they want to purchase or borrow products. The aim of recommendation system is to help the user in his decision making process, driving his focus on product that fits his needs. Recommendation systems are models capable of suggesting personalized items to a generic user by means of filtering techniques. This tools have acquired great relevance and have been widely used in recent years as they represent a significant improvement, especially in relation to the Big Data issue.