I have now been awarded the 4th MVP award for my expertise with Windows.
My experience with Windows Server has improved but the lack of adequately powerful machines limited my abilities. Exchange Server is so demanding that even 16GB of RAM is barely enough.
RAM has been very expensive when looking at 4GB or larger sticks. For that reason I have not been able to afford much memory.
I mostly have focused on desktop Windows as I have vast experience with it. I have learned enough about corporate needs as I have several Lenovo laptops which are used by corporate and government users.