The Improvement Service (IS) manages a successful and operational Citizens Account Service (CAS) with 2M registered citizens who are using the service for identity assurance to access key public services.This includes data validation checks (customer name / gender / date of birth and customer address ) on customer applications for a National Entitlement Card (the Scottish public sector smartcard service). The intention of this agreement is to provide secure identity assurance capabilities that are (i) already available within CAS or the market; or (ii) can be developed into CAS or sourced from the market to further improve and enhance the existing CAS to allow local government agencies and partners and the wider public sector to assert the required level of identity assurance to deliver public services. Please note that Provision of Smartcards, a Card Management System and Bureau Fulfilment are outwith the scope of this ITT.