A number of blog posts with imperative statement titles are queued up in my head. Most of these are a long time in coming. A few are inspired by some questions asked by customers we support at FireGiant. Like most blog posts titled with imperative statements these are general recommendations based on my experience. You can probably come up with exceptional cases so I encourage you to remember the advice here is free. Do with it as you wish. ;)
Of course, since I have you here, if you are looking for answers tailored to your particular scenario then I encourage you to checkout FireGiant's services.