Even though automated testing is a great tool any tester can have, there are still some issues that even the most sophisticated testing platforms can’t detect. Automated testing platforms are not able to detect how a screen reader relays the content to the user, how the page navigates using the keyboarding (tabbing through the site), alternative text that is inadequate (automated tests are just checking to make sure you have something in the ALT text field), certain color combinations that fall outside acceptable ratios for contrast, and videos that are uncaptioned or do not contain text transcripts.
The Air Carrier Access Act (ACAA) does not allow “service animals in training” in the cabin of the aircraft because “in training” status indicates that they do not yet meet the legal definition of service animal. However, like pet policies, airline policies regarding service animals in training vary. Some airlines permit qualified trainers to bring service animals in training aboard an aircraft for training purposes. Trainers of service animals should consult with airlines and become familiar with their policies.
Predictable: Websites should operate in ways that are familiar and predictable. When a new page element is in focus, the website should not initiate a change of context such as opening a new window or going to a new page. In addition, the website should warn of user-initiated changes of context ahead of time, for instance through the use of a submit button. Navigation and labeling should remain consistent between different pages.
As a result, most ADA suits are brought by a small number of private plaintiffs who view themselves as champions of the disabled. For the ADA to yield its promise of equal access for the disabled, it may indeed be necessary and desirable for committed individuals to bring serial litigation advancing the time when public accommodations will be compliant with the ADA."[57]
Because of this, among the greatest drivers of website accessibility are usability improvements and the reputation boost that it brings—or, alternatively, the lost business that organizations want to avoid as a result of inaccessible websites. According to a survey by the National Business Disability Council at the Viscardi Center, 91 percent of customers say that they’d prefer to shop at a website that prioritizes accessibility.
We recommend following the Web Content Accessibility Guidelines (WCAG) as best practice on your site, which is what our platform uses as the foundation for our accessibility guidelines. To see how accessible your site is according to WCAG, request a website audit using the form on this page. Your PDF report will be emailed to you within one business day, so you can start assessing the conformance of your site quickly. 
So when it comes time to do accessibility testing, what do we look for? How can I, as a tester, determine whether something is an accessibility issue or not? While it would be best to ask the people with disabilities directly, budget and time constraints can prevent firsthand feedback. A second approach is to emulate some of these disabilities and use other automated testing platforms to determine where the site needs ADA compliance.
The ADA’s relationship with websites has been a complicated and often confusing story. The ADA does not explicitly address online compliance, even after undergoing several amendments in the far more web-oriented era of 2008. With no specific coverage under the law, it usually falls to the courts to determine how ADA standards apply to websites—or whether they do at all.  

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."
ADA stands for the Americans with Disabilities Act, and it has been the law of the land since 1990. Title III (private sector businesses) of the Americans with Disabilities Act (ADA) prohibits discrimination on the basis of disability in places of public accommodation. It applies to any business that has 15 or more employees. While Title III of the ADA is typically known for its applicability to offline barriers such as lack of wheelchair access, acceptance of service animals, effective communication for hearing and vision impaired individuals, its focus in the digital age has turned to websites and online media.