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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?

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.

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.

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

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