Simplicity:

• Use only those third-party and custom modules that are necessary

• Use as much from core Drupal as possible (but only what you need)

Abstraction:

• Reuse generic components whenever possible; avoid one-off custom components

• Find other homes for content that should be separate from main site

  • Only public content on public site

Sustainability:

• Don't set yourself up for ensured failure down the road!

• Use only well-supported modules with good history

• Use preferred methods of extending Drupal, not hacks and kludges