https://phys.org/news/2018-06-internet-net-neutrality.html

The repeal of "net neutrality" took effect six months after the Federal Communications Commission voted to undo the rules, which had barred broadband and cellphone companies from favoring their own services and discriminating against rivals such as Netflix.

Internet providers such as AT&T, Verizon and Comcast had to treat all traffic equally. They couldn't slow down or block websites and apps of their choosing. Nor could they charge Netflix and other video services extra to reach viewers more smoothly. The rules also barred a broadband provider from, say, slowing down Amazon's shopping site to extract business concessions.