Two agencies within the U.S. Department of Labor enforce parts of the ADA. The Office of Federal Contract Compliance Programs (OFCCP) has coordinating authority under the employment-related provisions of the ADA. The Civil Rights Center (CRC) is responsible for enforcing Title II of the ADA as it applies to the labor- and workforce-related practices of state and local governments and other public entities. Visit the Laws & Regulations subtopic for specific information on these provisions.
ADA website compliance is about making sure that everyone has equal access to all the elements on your website and apps. That may mean you need to provide alternatives for some of the functions and content on your site in order to meet ADA website compliance standards. Here’s a quick rundown of some of the accommodations that need to be incorporated into your website to meet the ADA guidelines:

Many people may not know that ADA compliance extends to websites now. Your website, of course, isn't discriminating based on not having an elevator or ramp, but it may not be using appropriate colors, fonts and file types. Hard-to-see colors and fonts can discriminate against people with visual impairments, as can certain file types that don't allow computers to read text out loud for those who need such an accommodation. Read on to learn more about how the ADA may affect your business and how you can test your website for compliance.
Several U.S. courts, including the United States Court of Appeals for the Ninth Circuit, have ruled that commercial websites, including those where people make online purchases, are bound by ADA regulations. The ADA calls for auxiliary aids in communication, which has been interpreted by courts as extending to online video captioning and website accessibility.
Federal law isn't the only consideration for businesses. Additionally, each state interprets the law differently. Consider the case against Netflix in 2012. Lawsuits were brought in federal court in Massachusetts and California. Netflix was accused of violating the ADA by not offering "closed captioning" options for its Internet streamed movies. Illustrating the complexity of this issue, the courts reached completely opposite decisions. Massachusetts held that Netflix must comply with the ADA, while the California court found that Netflix did not fall under the ADA's definition of "public accommodation."
The final title contains a variety of provisions relating to the ADA as a whole, including its relationship to other laws, state immunity, its impact on insurance providers and benefits, prohibition against retaliation and coercion, illegal use of drugs, and attorney’s fees.  This title also provides a list of certain conditions that are not to be considered as disabilities.
Since enforcement of the act began in July 1992, it has quickly become a major component of employment law. The ADA allows private plaintiffs to receive only injunctive relief (a court order requiring the public accommodation to remedy violations of the accessibility regulations) and attorneys' fees, and does not provide monetary rewards to private plaintiffs who sue non-compliant businesses. Unless a state law, such as the California Unruh Civil Rights Act,[55] provides for monetary damages to private plaintiffs, persons with disabilities do not obtain direct financial benefits from suing businesses that violate the ADA.
The Commission also recognizes that differences and disputes about ADA requirements may arise between employers and people with disabilities as a result of misunderstandings. Such disputes frequently can be resolved more effectively through informal negotiation or mediation procedures, rather than through the formal enforcement process of the ADA. Accordingly, EEOC will encourage efforts of employers and individuals with disabilities to settle such differences through alternative methods of dispute resolution, providing that such efforts do not deprive any individual of legal rights provided by the statute.
In 2018 alone, there were around 1,000 lawsuits related to website accessibility. Industries affected include e-commerce stores, restaurants, consumer goods companies and more. These lawsuits even impacted major corporations such as Hershey's, Burger King and Nike, to name a few. With no slowdown in lawsuits expected, it's essential that companies comply with ADA standards to avoid costly litigation and negative press. 

...the full and equal enjoyment of the goods, services, facilities, or accommodations of any place of "public accommodation" by any person who owns, leases, or operates a place of public accommodation. Public accommodations include most places of lodging (such as inns and hotels), recreation, transportation, education, and dining, along with stores, care providers, and places of public displays.
In this case, Barnett was a US Airways employee who injured his back, rendering him physically unable to perform his cargo-handling job. Invoking seniority, he transferred to a less-demanding mailroom job, but this position later became open to seniority-based bidding and was bid on by more senior employees. Barnett requested the accommodation of being allowed to stay on in the less-demanding mailroom job. US Airways denied his request, and he lost his job.
Prohibited discrimination may include, among other things, firing or refusing to hire someone based on a real or perceived disability, segregation, and harassment based on a disability. Covered entities are also required to provide reasonable accommodations to job applicants and employees with disabilities.[16] A reasonable accommodation is a change in the way things are typically done that the person needs because of a disability, and can include, among other things, special equipment that allows the person to perform the job, scheduling changes, and changes to the way work assignments are chosen or communicated.[17] An employer is not required to provide an accommodation that would involve undue hardship (significant difficulty or expense), and the individual who receives the accommodation must still perform the essential functions of the job and meet the normal performance requirements. An employee or applicant who currently engages in the illegal use of drugs is not considered qualified when a covered entity takes adverse action based on such use.[18]
The ADA prohibits discrimination on the basis of disability and says that places of public accommodation (including private commercial enterprises) need to make accommodations for the disabled (42 U.S.C. § 12182).  Importantly, a place of public accommodation, per 42 U.S.C. § 12181(7), amounts to a privately operated facility whose operations affect commerce.   However, since the ADA came pre Internet era, the ADA didn’t contemplate or mention websites or apps.
Title II of the ADA prohibits discrimination against qualified individuals with disabilities in all programs, activities, and services of public entities. It applies to all state and local governments, their departments and agencies, and any other instrumentalities or special purpose districts of state or local governments. It clarifies the requirements of section 504 of the Rehabilitation Act of 1973, as amended, for public transportation systems that receive federal financial assistance, and extends coverage to all public entities that provide public transportation, whether or not they receive federal financial assistance. It establishes detailed standards for the operation of public transit systems, including commuter and intercity rail (e.g., AMTRAK).
I should mention one caveat to all of this. Businesses that are required to comply but don't have the ability to bring their websites into compliance can provide an accessible alternative to provide the same information, goods, and services that they provide online, like a staffed phone line. The trick, however, is that this option has to provide at least equal access, including in terms of hours of operation. And, as we know, the internet is around 24/7, so good luck with that.