A company has multiple web and mobile apps that rely on both in-house and social identity providers. You need to implement single sign-on (SSO) across all applications. Which solution should you use?

Azure AD B2C is designed for customer-facing applications, allowing users to sign in with local accounts or social identity providers. Custom policies in Azure AD B2C provide the flexibility to integrate multiple identity providers (in-house and social) and define complex user journeys for SSO across various web and mobile applications. Azure AD B2C with user flows offers a simpler configuration but might lack the advanced customization needed for integrating diverse in-house identity providers. Azure AD B2B is for collaborating with guest users from other organizations, not for customer-facing applications with varied identity providers.