I like the two-tier approach although you need a large company to support it (yup, they do have upsides too). While the product is still being developed/alpha/

I like the two-tier approach although you need a large company to support it (yup, they do have upsides too). While the product is still being developed/alpha/unstable, developers do the oncall. Benefit: they do have knowledge & having skin in the game works as motivation. This part is mentioned in the article, btw. But then, when the product matures, an SRE organization takes over. Key point: they do so voluntarily and can request changes before taking over. This creates the good dynamic of separate people for separate roles, one can think of as 'judicial independence'. There's nothing like combining own skin in the game and the fact that you're pointing out deficiencies in somebody else's product (not yours) to get the extreme level of diligence typical for those reviews. SRE review is a long process and generally assures the product adheres to a set of good practices surrounding monitoring, alerting, logging, playbooks, rollouts & canarying, emergency levers and whatnot.