[tgtweak]

There are so many things that can go wrong with a single provider, regardless of how many availability zones you are leveraging, that you cannot depend on 1 cloud provider for your uptime if you require that level of up.

Example: Payment/Administrative issues, rogue employee with access, deprecated service, inter-region routing issues, root certificate compromises... the list goes on and it is certainly not limited to single AZ.

A very good example, is that regardless of which of the 85 AZs you are in at aws, you are affected by this issue right now.

Multi-cloud with the right tooling is trivial. Investing in learning cloud-proprietary stacks is a waste of your investment. You're a clown if you think you need 25 people internally per cloud is required to "do it right".

[unethical_ban]

All cloud tech is proprietary.

There is no such thing as trivially setting up a secure, fully automated cloud stack, much less anything like a streamlined cloud agnostic toolset.

Deprecated services are not the discussion here. We're talking tactical availability, not strategic tools etc.

Rogue employees with access? You mean at the cloud provider or at your company? Still doesn't make sense. Cloud IAM is very difficult in large organizations, and each cloud does things differently.

I worked at fortune 100 finance on cloud security. Some things were quite dysfunctional, but the struggles and technical challenges are real and complex at a large organization. Perhaps you're working on a 50 employee greenfield startup. I'll hesitate to call you a clown as you did me, because that would be rude and dismissive of your experience (if any) in the field.

[tgtweak]

I advise many fintechs with engineering orgs from 5 to 5000, 2 in top 100 - none are blindly single-cloud and none have 25 people dedicated to each of their public clouds. The largest is not on any public clouds due to regulation/compliance and have several colocation facilities for their mission critical - they have less than 25 dedicated in the entire netsec org. This is a company that maintians strict PCI-DSS1 on thousands of servers and thousands of services. If you're employing 25 people per cloud for netsec in a multi cloud environment you have some seriously deficient DevOps practices or your org is 5-figure deep and has been ignoring devops best practices while on cloud for a half decade. Hahsicorps entire business revolves around cloud agnostic toolkits. All clouds speak kubernetes at this point and unless you have un-cloudable components in your stack (like root cert key signing systems on a proprietary appliance) you really should never find yourself in such a scenario where you have that many people overseeing infra security on a public cloud. It's been proven time and time again that too many people managing security is inversely secure.

[unethical_ban]

I meant at least 25 people in the DevSecOps role per cloud. Security experts, network/ops/systems experts, and automation (gitlab and container underlay) support.

K8s is one of a hundred technologies to learn and use, and just because each cloud is supported by terraform, you can't swap a GCP terraform writer over to Azure in a day.

And no bank is without their uncloudable components.