Considerations 

Lets list out some things to consider when looking to scale and some possible ways to overcome them.

To start off the conversation here are a couple items from the mailing list discussion:

  • Uploaded media files (WP stores files in a local install dir that is not easily changable)
  • Updates to plugins and core
  • Adding additional databases
  • Load balancers
  • CDNs
  • Caching solutions