HRIS is a systematic way to store employee data to aid in planning, decision making, and reporting. It offers comprehensive and ongoing information about employees and jobs at a reasonable cost while maintaining data security and privacy. There are different types of HRIS systems like operational, tactical, and strategic systems. HRIS functions by collecting data, managing it through storage and retrieval, and disseminating it. It has six steps and is used by various levels of employees and executives. HRIS applications include job descriptions, HR planning, staffing, succession planning, training, performance management, job evaluation, and compensation. Benefits are keeping information organized, reduced costs, faster data processing, accurate data, and freeing up HR time.