FusionAuth and Xkit are collaborating to simplify authentication and integration infrastructure for SaaS businesses. By using their services together, developers can boost the productivity of their engineering teams by outsourcing what they can, allowing them to focus on product development. FusionAuth provides a user management system with APIs for controlling everything, including multi-factor authentication and consent management, while Xkit makes integrating third-party systems a snap. The two services integrate through an RSA key and JWKS URL setup, allowing users to log in using FusionAuth's Login API and grant access to integrations configured in Xkit. This connection saves developers the trouble of dealing with API keys and provisioning users for Xkit, while also providing one view of all their users across multiple applications.