Implement the LTI 1.3 concept of "deployment_id". This allows Sakai to host multiple tenants at the same URL and differentiate between those tenants. It is similar to the LTI 1.1 variable "tool_consumer_instance_guid" but with much better definition. This is the property
For now it is unlikely that anyone will need to set this or perhaps it might need to change one a site by site basis or be set differently for different LAMP schools. But for now leave this as default.