Hold on, micro services were the original thing and you piped everything together. Just look at how bash scripts work. grep | sed | awk | ping | nectar -a | echo "holy cow" | vim -a -o -f --my-homie-we-win-this *.o

Now you don't need fifteen apps, all of which do text gripping. You just use the same grep.

Same for the above setup: I don't give a crap about BitTorrent, so why would I want RAM devoted to running anything related to that? RAM is expensive, yo!