[Zope] Deployment Best Practices?

I'm in the process of attempting to migrate a fairly large scale internal XMLRPC system over to Zope. The current system is all custom. That provides for a lot of internal code that we really don't need to be managing. I'm looking for best practices and approaches to deploying Zope 3 instances and a backend ZEO server to share the data. I don't think I've seen it covered anywhere. I've seen it documented from the Zope 2 perspective (both old school and via buildout recipes). It seems this would be a fairly common configuration. Is this stuff covered anywhere? I've been hitting Google up for the last hour or so and I can't seem to find any documentation on deployment and update methodologies. Thanks!