Sentiment analysis is used by companies to understand the emotions of their customers and get feedback about their products or services. It can also help companies to track the sentiment of the general public towards their brand, and identify any potential issues. Sentiment analysis is typically used as a way to measure customer satisfaction, but it can also be used for other purposes such as marketing research, market monitoring, and product development. There are a number of different ways that companies can use sentiment analysis, but some common methods include social media monitoring, online reviews analysis, and survey responses.