A retail company is expanding its digital footprint by launching an online platform aimed at directly selling products to consumers (B2C). Their strategic goals include offering a seamless and highly personalized shopping experience, which encompasses allowing customers to sign in using their preferred social media accounts or through biometric authentication. Additionally, the company prioritizes maintaining stringent security standards to protect customer data while providing these user-friendly authentication options. Considering these requirements, which Azure service is the most suitable for enabling the creation of personalized user journeys and supporting a variety of authentication methods, including social logins and biometrics? (Choose one correct option from the following)