Windows 10 includes several enhancements to Snap, making it easier to manipulate the layout of open windows on your desktop. These enhancements include:
Consistent Snap behavior across traditional Win32 and modern apps.
Snap Assist, which makes it easy to snap additional windows after the first one.
Four-quadrant Snap, which enables you to fill your screen with four apps in a two-by-two configuration.
Snap two windows side by side
Drag the title bar of a window to the left or right side of the screen, until a half-screen outline of the window appears.
Release the mouse (or lift your finger) to snap the window into position.
Repeat steps 1 and 2 for the other window, using the other side of the screen.
When you snap an app to the left or right, Snap Assist displays thumbnails of your other open apps—just select one to snap it to the other half of your screen.
Snap four windows into a two-by-two configuration (Quadrant snap)
Drag the title bar of the first window to the left or right side of the screen near a corner, until a quarter-screen outline of the window appears.
Release the mouse to snap the window into position.
Repeat steps 1 and 2 for the other three windows, using the other corners of the screen.