The document discusses ML1, an AI-powered Jira plugin created by Exadel that uses machine learning to predict field values in Jira tickets. It describes how ML1 was developed to help Exadel's technical support team automate ticket assignment and reduce processing time. Rather than using a single machine learning model for all users, ML1 takes an approach of training and using a separate model for each individual user or group. This allows the models to better reflect the specific data and needs of each user. The document also discusses considerations for monitoring and improving a multi-model machine learning system over time.