Feature flag environment variable accepts boolean values:
true or false.IS_MULTI_PROVIDER_CONFIGURATION_ENABLEDadds ability to connect multiple providers per channel and make them active. It also shows redesigned Integrations store page.

Redesigned Integrations store page.
IS_MULTI_TENANCY_ENABLEDadds ability to manage tenants from dashboard.

Once multi-tenancy is enabled, the Tenants page will appear.
IS_TEMPLATE_STORE_ENABLEDenables template store which contains pre-made workflows for common use cases (like Password Reset workflow etc).

With template store enabled, you can choose from pre-made workflows.