What are your favourite, or least favourite but necessary, cost-cutting methods?
I feel I am spending too many resources on unnecessary stuff.
Edit: I feel the need to reduce both – the resources, to host multiple things on one system, and cost, to buy/pay for multiple systems. Currently, I have 2 ARM VPSes and 1 old MacBook Air as a home server.
While I don't agree with your first point from my experience, the second one is very true. Especially for memory consumption, your typical Java app easily occupies five times as much as something more bare metal.