An accessible website should operate the same way for all its users, regardless of their physical ability. In other words, web accessibility is all about inclusiveness; it is about making sure no one is left out because they cannot see, hear, or use a mouse or keyboard like any able-bodied person. With Google’s algorithm change in April 2015, this also means your website has to be mobile friendly.
Advocacy groups argue that having an inaccessible website is discrimination and violation of human rights. Some have even gone on to file high-profile lawsuits against multinational companies like Target, Sydney Olympic Committee, AOL and others receiving favorable decisions in court. These cases were able to set some important precedents so that if your site is not yet optimized for disabled users, your company may be at risk of civil litigation.