Clinical information systems (CIS) integrate medical applications and technologies to collect, store, and analyze healthcare data to provide secure access for clinicians. A CIS includes electronic medical records, clinical decision support, and tools for training and research. Key benefits include easier access to patient data, improved searchability, enhanced safety, and data analysis. Nurses, physicians, administrators and other staff must be involved in selecting and implementing a CIS to ensure it meets clinical needs. The implementation process involves eight phases from planning to evaluation to ensure the system functions properly. Overall, a well-implemented CIS aims to make healthcare delivery and decision making more efficient, safer and higher quality.