Abstract: Systems and methods for enabling cross-tenant access are provided. In particular, a computing device may receive an access request, from a user of a first tenant, requesting access to a resource of a plurality of resources on a shared collaborative channel of a second tenant. The computing device may further evaluate cross-tenant access policies of the first and second tenants to determine that access to the plurality of resources is authorized by the first and second tenants, validate that the user is a member of the shared collaborative channel, and generate a validation token indicating the user is validated to access the plurality of resources. Based on the validation token, the computing device may further validate that the user is in compliance with the cross-tenant access policies for accessing the resource and grant the user a set of permissions to access the resource.