A security policy plays a vital role in the deployment of a network topology. A security policy helps network administrators to prioritize their administration role. A proactive security policy protects the intellectual property of a company from several potential attacks/threats. This also helps the organization to introduce rules and regulations to the user, about how they should make use of their IT equipment.
A security policy helps baseline security terms to reduce the risk of losing an organization's artifacts. It provides an understanding for security administrators as to what steps they should take if there is a security violation, and what the consequences of the violation should be.