Plone 4 - Enterprise level CMS  Kevin Gill
Who Am I  Software Developer 20 Years
Python / Zope Developer since 2002
Net Visionary Award Winner 2005, 2007
Re-introduced to Plone 2009
What is a CMS? Content Management System Add/Edit all sorts of content (Via browser) Pages, News Items, Images, Video Grouping / aggregating content (bigger story)
Syndication
Security
Cross Reference
Secondary Content
Meta data
Work flows
Sub-sites / Group Content/ User Content
How does Plone differ from an Application Framework? Plone is an application not a framework
Plone works 'out of the box' with customization
Plone puts too many things in the way before you can start to develop an application. Application Frameworks simplify / structure web-applications, examples: Django, Grok, Pylons, TurboGears, web2py, Zope (see wiki.python.org/moin/WebFrameworks)
Why not build a CMS myself Plone is: Well documented
Professional Support is available
Multi Lingual
Scalable, easily deployed
User Friendly
Meets Accessibility Requirements
Secure
A Web Publishing System rather than a document Publishing system

Introduction to Plone (PyCon Ireland 2010)