Press Windows key + Left Arrow to snap the active window to the left
Press Windows key + Right Arrow to snap the active window to the right
Drag a window to the left or right edge of the screen to snap it there
Open another window and snap it to the opposite side
Use Windows key + Up Arrow or Down Arrow to resize or move the snapped window
On Windows 11, hover over the maximize button and choose a split-screen layout
Drag windows into the layout sections to place them
Use Task View with Windows key + Tab to switch between open windows
Adjust the divider between split windows by dragging it left or right
On multiple monitors, drag windows to different screens for separate splits