I’ve been at a lot of conferences in the past few months, and the question I was asked most often had to have been around what we support and don’t support when it comes to site and portal customizations, modifcations to site definitions, and so on.  The thing that spawned these questions is this article on TechNet.  In a nutshell, it suggests in pretty strong words that if you modify our out-of-the-box site definitions, we won’t support them anymore, and that if you create new site definitions, we won’t support changes to them once you’ve actually created even one site based on them.

Don’t panic.  You’re not in trouble.  You can still customize site definitions.  Allow me to explain…

1. What We Mean By “Support”

When we say something is supported, we mean a number of things, including (a) it’s our code, so (b) we’ve tested it an know how it’s supposed to behave, and (c) when you’re having trouble making it behave as designed, we’ll help you fix it, and (d) it conforms to our expectations as to what has been placed where so we can automate changes to it (very important when applying service packs).

If you modify a site definition, then it becomes your code, at least in part.  We won’t know what you did, and we won’t know how your changes will affect performance, stability, or security.  But that doesn’t mean that you’re all alone if you choose to customize a site, an area, or a site definition.

2. You Can Still Put Yourself Back Into a Supportable State At Will

If you encounter a problem that will require support, and you’ve customized WSS or SPS into an unsupportable state, and you can roll back your changes, and the problem is still there — then we’ll work with you to fix it.  What that means is that you should take note of the changes and customizations you make so you can remove and reapply them at will.  It’s more work, but it’s worth it (especially if we’d otherwise be overwriting your changes when we install a service pack).

And, of course, if the problem goes away when you roll back your changes, then the problem is with your changes.  But even then, you’re not out in the cold — you still have options…

3. Actually, Microsoft Has a Support Vehicle for Custom Code

Product Support Services and/or standard Premier Support are designed to support our code.  The aforementioned statement on supportability pertains to what they’ll do for you because they know what our products do and how to make them behave the way they were designed to behave.  But they’re not the only support vehicle Microsoft offers.

We also have Premier Support for Developers (PSFD).  They support your code when you develop with our APIs, tools, or platforms.  They charge by the hour, not by the incident, but they’ll support anything you write, customize, etc.  PSFD will work with you on custom site definitions, Web Parts, and just about everything else.

So, for maximum supportability when you need to customize your sites, I’d urge you to (a) keep track of your changes and plan to be able to remove and reapply them, (b) work out a PSFD agreement (get in touch with your Microsoft office for details).

And above all, don’t panic.