Even now that the White House’s self-imposed November 30th deadline has passed, members of the emergency tech team assigned to fix Healthcare.gov remain glued to computers in a Maryland office, working to repair the most important website the government has ever launched.

On the walls, 16 large flat-screen monitors detail how the site is performing in real time, showing bottlenecks, traffic to different parts of the site, and common error messages.

This, what’s on these screens, is the government’s highest domestic priority right now.

Healthcare.gov isn’t just a website where people buy health insurance, soon to be mandatory under the Patient Protection and Affordable Care Act (ACA). It’s the support system for the way health care works now. By design, there is no way to get correct pricing on insurance without touching some part of Healthcare.gov.

It’s the first time a major law has depended so heavily on the internet. Since the ACA passed, President Barack Obama has reportedly ended every health care meeting the same way: “If the website doesn’t work, nothing else matters.”