"Head count: Node.js. Typically they are seeing anywhere from ⅓ to 1/10 the number of developers needed on the new stack vs the old stack."
That's ridiculously implausible. I know node is more concise, but 300-1000% productivity increase doesn't come from less typing. Even if we assume they had a lengthy build/restart cycle on some J2EE web container, that could only plausibly increase output by 10-20%. Sounds like they had an absolutely shitty application architecture and he convinced them to do something both reasonable and modern with the former being the biggest improvement.
That's ridiculously implausible. I know node is more concise, but 300-1000% productivity increase doesn't come from less typing. Even if we assume they had a lengthy build/restart cycle on some J2EE web container, that could only plausibly increase output by 10-20%. Sounds like they had an absolutely shitty application architecture and he convinced them to do something both reasonable and modern with the former being the biggest improvement.