An identity provider (IdP) is a service that manages a single identity across many networks, services, and applications. This simplifies access control by giving users seamless access to multiple resources with one login credential. Identity Providers are critical in Zero Trust adoption, which requires both authentication and authorization to protect resources while allowing users to get work done. IdPs help solve problems such as unsecure passwords, privacy risks, and more attack vectors that arise from managing multiple user credentials across distributed resources. By providing a single identity for access to various resources, Identity Providers reduce the complexity of managing access policies and enhance security in a cloud-based and distributed environment.