alt Hacker NewsYes and no. They (or anybody else) are not guaranteed to be secure, of course; see all the compromises regularly found in cloud providers; Azure especially has had so many cross-tenant vulnerabilities (there’s one on the front page right now!) that I’m amazed the concept of public multi-tenant clouds still exists.
But they are also very highly incentivized to be more secure. They have millions of customers (hence a correspondingly higher expectation of trust) and billions in revenue from the trillions in economic activity happening on those platforms (hence a correspondingly larger target on their backs.) This means exponentially higher liabilities. And that probably matters more than any other factor.
Adding on to it, even though they may be using AI as well. This could very well be a placebo and deniability factor but the fact remains that they have many many qualified employees and the chances of bugs passing through that are much less compared to other systems. Also it's that the systems are very severely pen-tested and have years of bugs removed out and the incentive of billions of dollars at stake that you mention that they have for the trust premium.
They will still make mistakes but they have the resources to make them less.
I doubt that such intense level of thorough testing can occur in a smaller company.
I still love small VPS providers and use them myself but it is worth knowing why enterprise is willing to pay a premium over those to these hyperscalers (it is a trust premium)