> What does single-tenant SaaS even mean? I'll attempt to explain to clarify my own understanding. SaaS is a delivery mechanism. Tenancy is an isolation model

> What does single-tenant SaaS even mean? I'll attempt to explain to clarify my own understanding. SaaS is a delivery mechanism. Tenancy is an isolation model. To your broader point, the isolation model is implementation specific. Multi-tenant SaaS means a single deployment for all tenants, and the data is delivered over the internet. Single-tenant SaaS means a separate deployment for each tenant. I think common usage means a separate database per tenant. Single-tenant can also include entirely new infra for each tenant with private networking which is what Gitlab describes. HN thread on single-tenant DB experiences with lots of useful tidbits: https://news.ycombinator.com/item?id=23305111 https://news.ycombinator.com/item?id=23305111