Creating a B2B Next.js Application

The guide demonstrates how to build a multi-tenant B2B application in Next.js using PropelAuth, enabling users to sign up, manage accounts, create or join organizations, invite coworkers, automatically admit users with matching email domains, and assign role-based permissions. PropelAuth supplies hosted authentication pages, configurable branding and sign-up fields, passwordless or password-based login, social sign-on options, transactional emails, and organization-management interfaces, while its React package provides an AuthProvider, user and organization data, access tokens, and redirects for login, signup, account management, and organization creation. The example uses organization helpers to display a user’s organizations and protect organization portal pages on the client by confirming membership, then sends JWT access tokens in authorization headers for authenticated API calls. On the Next.js backend, PropelAuth’s Node library validates access tokens and verifies that a requester belongs to the specified organization before returning organization data, ensuring that frontend checks are reinforced server-side.

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