For a broad spectrum of commercial and personal lines of insurance, ISO provides analytical and decision-support products and services, including statistical, actuarial, underwriting, and claims information; consulting; technical services; policy language; information about specific locations; fraud-identification tools; and data processing.

ISO's AIR Worldwide subsidiary provides the most advanced technologies for assessing and managing the risk of natural and man-made catastrophes. And through its AscendantOne unit, ISO delivers policy-management and rating systems.

ISO examines fire protection in cities. Once the examination is completed, a number is assigned to the community. Most insurance companies use the ISO class rating to determine fees for fire insurance. The class rating range is from 1 – 9+.