In a cloud server (hidden from the public)

  www.keycloak.org  - auth mostly for outline
  www.getoutline.com - my personal "notion"
  nginxproxymanager.com - to proxy things
  Wireguard - remote access and interconnection between zones
  cockpit-project.org - to manage VMS
  github.com/coder/code-server - To remote develop
  2x of docs.paperless-ngx.com/ (one for me and one for my partner) - I scan and destroy most of the letters I get.
  snibox.github.io/ - my terminal companion
  pi-hole (together with wireguard I don't have ads on my devices)
  uptime.kuma.pet - to be sure that things are online
  mailcow.email/ - for non priority domains
  docs.postalserver.io/ - mail server for apps and services
At home (small 6w nic with):

  HomeAssistant - To control home lights
  Cups - share printers
  Wireguard - (connected to the cloud)

You can run pihole in the cloud? That is very useful information.

Why wouldn’t you be able to? Pihole is just dnsmasq with a frontend.

The biggest curse of the Raspberry Pi is a whole heap of stuff that has gone from “needs a UNIX server” to “but surely that requires an underpowered UNIX server with a very specific distribution of Linux”.

Pi-hole runs just fine in Docker [1]. You don't need a Pi to run it.

[1]. https://github.com/pi-hole/docker-pi-hole/