How can I transfer my Windows 10 OS to newly installed SSD?

Changed your laptop hard drive or SSD but now not sure how to activate your Windows after this migration? Know from our experts how to do so.

I own ASUS X541U with 1 TB hard disk but it is giving 100% disk usage problem. I have now installed a new SSD of 120 GB capacity to increase the processing speed of my ASUS laptop with 4 GB RAM. How can I transfer my genuine or licensed version of Windows 10 to my new SSD hard disk?