As businesses become more sophisticated in their use of the Internet, a single web site in a single language is becoming less common and the trend is toward multiple languages and often to multiple, regional and/or branded web sites. Supporting multiple sites (multiple domains) on a single code base is known as "multi-tenant" architecture. Multi-tenant and multi-lingual web platforms present a number of interesting challenges.

I've helped build two such systems, a content management system at Broadchoice and more recently a dating platform at World Singles. In this deep dive, we'll look at the pros and cons of many of the decisions my teams had to make as we faced and overcame a variety of technical challenges. We'll cover different approaches to web, application and database infrastructure, authentication and security, skinning, content management in multiple languages, and more!

If you would like to know how to migrate an existing procedurally programmed application into an object oriented one, grab a chair and sit for a while.

We'll discuss some sensible guidelines designed to help you make incremental changes towards OO nirvana.

We'll also look at lots of code samples, we all like code samples, right?