Both SaaS and multi-tenant hardware have massive surface area.
For multi-tenancy, it isn't about trusting AWS/Azure/GCP, it's about trusting everyone you're sharing hardware with.
Cloud products are difficult to setup (AWS in particular). If you can't setup PostgreSQL properly, why are we assuming you can setup AWS properly? Look at the recent Endgame pen testing tool (1)
For multi-tenancy, it isn't about trusting AWS/Azure/GCP, it's about trusting everyone you're sharing hardware with.
Cloud products are difficult to setup (AWS in particular). If you can't setup PostgreSQL properly, why are we assuming you can setup AWS properly? Look at the recent Endgame pen testing tool (1)
(1) - https://qht.co/item?id=26154038