Define the term "Identity Provider" (IdP).

The term "Identity Provider" (IdP) refers to a system that manages identity information and authentication. An IdP stores and verifies user identities, enabling secure sign-on processes and facilitating Single Sign-On (SSO) capabilities across multiple applications. An IdP is responsible for handling authentication requests and providing assertions about the identity of users to relying parties or service providers.

For instance, in a scenario where users access various applications (like email, document storage, and project management tools) using the same login credentials, the IdP simplifies the experience by ensuring that users need to remember only one set of credentials. It plays a critical role in modern identity and access management frameworks by enhancing security and streamlining user access.

The other options do not accurately reflect the functionality of an IdP. A user interface for application creation does not relate to identity management, while an app for social media integration and a tool for database management serve wholly different purposes and do not encompass identity authentication or identity data management.