<blockquote>Bringing Node.js into PayPal removed the barriers between the layers in the software organization, Node.js and javascript all the way up from just above the services layer to the frontend layer, meaning you need fewer engineers.

In one project there was initially 25-30 java engineers were required to build a simple controller layer. Later this was simplified to a smaller team. But in parallel, the Node.js team did it with just 1-2 node engineers.</blockquote>