Package apps into containers so they run the same on your laptop and on a server.
Try it Pros of Docker
Same environment everywhere
Huge ecosystem and docs
Easy to ship Node, Python, and more
Pairs well with Nginx and VPS hosts
Cons of Docker
Desktop licensing for large companies
Learning curve for networking and volumes
Can be heavy on smaller machines
Open-source web server, reverse proxy, and load balancer used in front of most production apps.
Try it Pros of Nginx
Free and battle-tested open source
Excellent reverse proxy performance
Huge community and examples (very popular)
Pairs well with Docker and VPS hosts
Can serve static sites on its own
Cons of Nginx
Config files take practice
You manage the server yourself
Advanced features need Plus or extras
Not a full cloud host by itself