[raw_anon_1111]

No, if they said they were running on separate VMs I wouldn’t have any issues.

Absolutely no serious company would run their web software on a shared Apache server with other tenants.

How did that shared hosting work out for Vercel?

[icedchai]

As always, "it depends" on the application. So I've worked for several B2B SaaS companies. None of them used a VM per tenant. In some cases, we used a database (schema...) or DB cluster per tenant.

I've read about the Vercel incident. Given the timeline (22 months?!), it sounds like they had other issues well beyond shared hosting.

[scarface_74]

There is a difference between a SaaS offer where you are running your code and serving multiple customers on one server/set of servers and running random customer code like Vercel.

[icedchai]

I know. I just don't think code isolation was their only issue. I've read about the incident.