Artificial Intelligence, broadly speaking, refers to computer systems capable of performing tasks that traditionally required human intelligence. These tasks include understanding natural language, recognizing patterns, problem-solving, and making decisions. By incorporating AI into their business operations, companies can enhance their efficiency and accuracy, thereby improving both their performance and customer satisfaction. One pratical application of AI is seen with global retail giant Carrefour, which deployed on June 2023 an AI chatbot "Hopla" based on ChatGPT technology. Integrated into Carrefour.fr, the chatbot assists customers with their daily shopping, helping them select products based on their budgets, dietary constraints, or menu ideas, thus enhancing the customer experience significantly. 

Contrastingly, the true power of Machine learning lies in predictive analysis. Indeed, while AI replicates human intelligence, Machine Learning - a subset of AI, learns from data and improves its predictions over time without being explicitly programmed to do so. Machine Learning's strength lies in its ability to identify patterns and trends in large datasets and use these insights to predict future outcomes. For instance, Amazon uses ML to recommend products to customers based on their browsing and purchasing patterns making each user's homepage unique. This ML implementation has led to a substantial increase in their sales, with a 35% boost attributed to their recommendation engine.