Jen Pahlka—a HealthCare.gov rescue team member who helped start the US Digital Service—has been writing a really informative series of posts that summarize what the Obama administration learned from its efforts to make government more efficient.
I hate to be flippant, but it's just abundantly clear that Pahlka is soon going to be the newest recipient of a "fell for it again" award. I'm still an Elon fan at heart, but it's absolutely impossible to believe he's interested in the nuts-and-bolts view of government efficiency she's describing. He's repeatedly said that the problem is the government spending too much money, which he'll fix by finding employees, departments, and regulations to get rid of.
Here's a good starting point: "Bringing Elon to a Knife Fight": https://www.eatingpolicy.com/p/bringing-elon-to-a-knife-figh...
The basic goal of making government work well is (or should be) bipartisan. The nuts and bolts of how you do that are really hard to get right.