Intrusion Prevention Systems (IPS) are essential tools in network security that monitor network traffic for suspicious activity and potential threats. They work by analyzing data packets and identifying patterns that may indicate an attack, allowing organizations to respond quickly to mitigate risks. These systems not only detect intrusions but also take action to prevent them, such as blocking malicious traffic or alerting administrators. By implementing an IPS, businesses can enhance their security posture and protect sensitive information from cyber threats, ensuring a safer digital environment for their operations.