The other necessary component to having a working PWA for our application is to build out a Service Worker. Service Workers are another one of those components in PWAs that are not super well-understood, depending on who you ask, and their utility is also not immediately clear. We'll spend a little bit of time exploring and understanding Service Workers, even though the actual amount of work we need to do to implement Service Workers for our PWA is incredibly minimal (maybe even less work than our manifest file)!