The largest advantage currently (in my opinion) is with respect to cold starts. Lambda has gotten significantly better over the years, but cold starts are still a concern, largely because it’s difficult to anticipate the level of needed provisioned concurrency needed to mitigate it. Not having to think about that at all would be a large advantage (I’m ignoring Lambda SnapStart since it’s strictly limited to Java at this time).

It’s also the case that there’s just so much historical baggage within Node, mainly with regard to CJS. Developing against Deno at least presents the opportunity for us to move past that and improve DX.