Learn how to build and deploy multi-tenant B2B applications in this 46-minute technical demonstration video. Explore essential requirements for B2B applications, implement multi-tenancy authentication using Auth0's sample application, and discover streamlined production deployment with Vercel. Follow along with hands-on examples using the SaaStart GitHub repository and learn to leverage Auth0's Vercel integration for secure authentication workflows. Master practical techniques for managing tenant-specific authentication, configuring Auth0 settings, and deploying scalable multi-tenant applications through step-by-step guidance and real-world implementation scenarios.