The Registry Service Provider (RSP) Review is a mandatory part of the Application Evaluation process for every application. During the RSP Review, ICANN checks whether an applicant has selected one or more ICANN-evaluated Registry Service Providers (RSPs) to provide the critical technical services necessary for the operation of the applied-for gTLD string. This review also enables ICANN to confirm that the chosen RSPs are willing and able to support the gTLD string and any additional registry services the applicant intends to offer.