A report in Salesforce is a powerful tool that allows users to analyze and visualize data from their Salesforce organization. Reports can be created and customized by users to display data in a variety of formats, such as tables, charts, and matrices.

Reports in Salesforce are based on the data stored in objects, such as leads, accounts, contacts, opportunities, and custom objects. Users can choose the fields to include in the report, as well as the criteria and filters to apply to the data.

Salesforce provides a wide range of standard report types, such as tabular reports, summary reports, and matrix reports, that users can use as a starting point for creating their own custom reports. Additionally, users can schedule reports to run automatically and receive the results via email or as a Salesforce dashboard component.

Overall, reports in Salesforce are a critical tool for gaining insights into the performance of a Salesforce organization, tracking progress towards business goals, and identifying areas for improvement.