Once you have defined your goals, assessed your data sources, and evaluated your data users, you can start comparing different data integration tools. Cost, performance, functionality, usability, scalability, and security are all important criteria to consider when ranking and filtering them. Cost includes the tool's acquisition, maintenance, and update costs. Performance measures the speed, reliability, and accuracy of the tool in integrating data. Functionality looks at its capabilities for data extraction, transformation, loading, cleansing, validation, and visualization. Usability assesses how easy it is to install, configure, use, and troubleshoot the tool. Scalability determines how well it can handle increasing volumes of data. Security evaluates its ability to protect your data from unauthorized access or modification.