PDF Solutions, Inc. is a provider of infrastructure technologies and services for integrated circuits (IC). The Company's technologies and services focus on the IC manufacturing process life cycle. It operates in the segment of licensing and implementation of yield improvement solutions for integrated circuit manufacturers. Its solutions combine software, test chips, an electrical wafer test system, methodologies and professional services. The Company's characterization vehicle infrastructure (CVi) enables customers to electrically characterize the manufacturing process, and establish fail-rate information needed to calibrate manufacturing yield models and prioritize yield improvement activities. Its Exensio YieldAware solution incorporates all of the components of solutions, such as CVi, yield management software systems, and business intelligence dashboards. The Company's Exensio product family includes Exensio-Yield, Exensio-Control, Exensio-Test and Exensio-Char.