> but I have not seen much improvement in time to delivery.

Is this true, by the way, or it’s just our hedonistic treadmill?

Nowadays it’s extra fast to deliver and serve a lot of functionalities worldwide. Thing that would require a dev team are handled by a free saas out of the box.

But our implied non-functional requirements have grown exponentially. Twenty years ago, if a business critical software was offline for one day a month, it wasn’t a big issue. Today, if Facebook is offline for an hour it’ll make headlines on major newspapers.

Expectations just evolved. And writing working software over multiple layers of mess is as difficult as ever. “Precise estimation” is just a misnomer.