The document describes the Gaps Model of Service Quality developed by Dr. Shahaida P. The model identifies four key gaps that can occur between a customer's expected service and their perceived service. The first gap is the customer gap, which is the difference between a customer's expectations and perceptions. The other three are provider gaps: Gap 1 occurs when a company does not understand customer expectations. Gap 2 occurs when a company does not have the proper service designs/standards. Gap 3 occurs when the service delivered does not meet standards. Gap 4 occurs when external communications do not match actual performance. The document outlines factors that can contribute to each of the four gaps.