You can save the layout of your tabs and windows to standardize your work environment.
The layouts menu can be found in the upper right corner of Unity Editor:
Unity ships with 5 default layouts (2 by 3, 4 Split, Default, Tall, Wide) (marked with 1). In the picture above, aside from default layouts, there is also a custom layout at the top.
You can add your own layouts by clicking "Save Layout..." button in the menu (marked with 2):
You can also delete any layout by clicking "Delete Layout..." button in the menu (marked with 2):
The "Revert Factory Settings..." button removes all custom layouts and restores default layouts (marked with 2).