Web accessibility is no longer optional. ADA and EAA enforcement is accelerating, and Acquia Web Governance gives your team a clear path from compliance gap to fully accessible digital experience, regardless of ability.
Web accessibility means building websites that everyone can use, including the 1 in 6 people worldwide who live with a disability. It covers visual, auditory, motor, cognitive, and neurological barriers, and works hand-in-hand with assistive technologies like screen readers, keyboard navigation, and voice control.
The key is building it in from the start. Accessibility treated as a core requirement, like performance or security, produces better experiences for everyone.
The Web Content Accessibility Guidelines (WCAG) are built on four foundational principles, known as POUR. Every accessible web experience must satisfy all four. Missing even one makes the site inaccessible for some users.
Perceivable
Information and user interface components must be presentable in ways users can perceive. This means providing text alternatives for images (alt text), captions for video and audio content, sufficient color contrast between text and backgrounds, and content that adapts to different presentation formats without losing meaning.
Operable
All navigation and interaction must work through keyboard input, voice commands, and other input methods – not just a mouse. Users must have enough time to read and use content, and interfaces should avoid content that flashes at rates known to cause seizures. Clear, consistent navigation helps users find what they need.
Understandable
Text content must be readable and interfaces must behave predictably. This includes using plain language, providing clear error messages, designing consistent navigation patterns, and helping users avoid and correct mistakes. These practices support people with cognitive and learning disabilities and improve the experience for everyone.
Robust
Content must be interpreted reliably by a wide variety of browsers and assistive technologies. This requires clean, semantic HTML markup and proper use of WAI-ARIA (Accessible Rich Internet Applications) attributes to communicate the purpose and state of interactive elements to screen readers and other tools.
Web accessibility is both a moral imperative and a business strategy. Organizations that prioritize accessible websites unlock broader audiences, reduce legal exposure, and build stronger brands. Here's why it matters.
| Legal compliance and risk reduction |
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Accessibility is a legal requirement in most major markets. In the United States, the Department of Justice has adopted WCAG 2.1 Level AA as the mandatory standard for state and local government websites under ADA Title II, with 2026 and 2027 compliance deadlines now in effect. For private businesses under Title III, courts consistently use WCAG 2.1 AA as the benchmark. In Europe, the European Accessibility Act (EAA) requires accessibility across digital products and services. Organizations that delay face real risk – over 4,000 ADA-related lawsuits were filed in the U.S. in recent years. |
| Market access: reach 1.3 billion users |
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U.S. brands that are not prioritizing accessibility are losing up to $6.9 billion annually to competitors who are. Beyond direct disability prevalence, accessible design also serves aging populations, people with temporary impairments (a broken arm, an ear infection), and situational limitations (bright sunlight, noisy environments). The total addressable audience is far larger than the 1 in 6 figure alone suggests. |
| SEO and performance gains |
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Accessibility and search engine optimization (SEO) share significant overlap. Descriptive alt text, semantic heading hierarchy, clean HTML markup, mobile-friendly design, and fast load times all improve both accessibility and search rankings. Search engines reward accessible sites – the same structural clarity that helps a screen reader parse your content also helps Google understand and rank it. |
| Brand loyalty and corporate responsibility |
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Demonstrating a commitment to inclusion through accessible design increases audience trust and reflects strong corporate social responsibility. Brands that publish accessibility statements and maintain transparent compliance efforts signal that they care about every customer – not just the ones who can navigate a poorly built interface. |
| Inclusive design improves UX for everyone |
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The curb-cut effect applies to the web: features designed for users with disabilities make the experience better for all users. Captions help people watching video in noisy places. High-contrast text is easier to read on mobile screens in sunlight. Keyboard shortcuts accelerate workflows for power users. Accessible design raises the baseline experience. |
Multiple overlapping standards and laws govern web accessibility worldwide. Understanding which apply to your organization is the first step toward compliance.
The Australian Disability Discrimination Act 1992 (DDA) protects people with disabilities against discrimination across different areas of public life, including the provision of information and online services through the web.
The UK Public Sector Bodies Accessibility Regulations from 2018 mandates the accessibility of websites and mobile applications.
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Legislation
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Region
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Standard
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Applies To
|
|---|---|---|---|
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ADA Title II |
United States |
WCAG 2.1 Level AA |
State and local government websites and mobile apps |
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ADA Title III |
United States |
WCAG 2.1 Level AA (de facto) |
Private businesses ("places of public accommodation") |
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Section 508 |
United States |
WCAG 2.0 Level AA (via ICT Standards) |
U.S. federal agencies and contractors |
|
EAA |
European Union (27 member states) |
EN 301 549 (incorporates WCAG 2.1 AA) |
Private and public sector – e-commerce, banking, transport, telecom, and more |
|
AODA |
Canada (Ontario) |
WCAG 2.0 Level AA |
Public and private sector organizations with 50+ employees |
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UK Accessibility Regulations |
United Kingdom |
WCAG 2.1 Level AA |
Public sector bodies (central and local government, NHS, universities) |
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DDA |
Australia |
WCAG 2.0 (referenced; 2.1 recommended) |
Public and private sector – all areas of public life |
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WCAG |
Global (international standard) |
WCAG 2.2 (current); WCAG 3.0 (in development) |
Referenced by most national laws; applies globally as technical benchmark |
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Region
|
Standard
|
Applies To
|
|---|---|---|
|
ADA Title II |
United States |
WCAG 2.1 Level AA |
State and local government websites and mobile apps |
|
ADA Title III |
United States |
WCAG 2.1 Level AA (de facto) |
Private businesses ("places of public accommodation") |
|
Section 508 |
United States |
WCAG 2.0 Level AA (via ICT Standards) |
U.S. federal agencies and contractors |
|
EAA |
European Union (27 member states) |
EN 301 549 (incorporates WCAG 2.1 AA) |
Private and public sector – e-commerce, banking, transport, telecom, and more |
|
AODA |
Canada (Ontario) |
WCAG 2.0 Level AA |
Public and private sector organizations with 50+ employees |
|
UK Accessibility Regulations |
United Kingdom |
WCAG 2.1 Level AA |
Public sector bodies (central and local government, NHS, universities) |
|
DDA |
Australia |
WCAG 2.0 (referenced; 2.1 recommended) |
Public and private sector – all areas of public life |
|
WCAG |
Global (international standard) |
WCAG 2.2 (current); WCAG 3.0 (in development) |
Referenced by most national laws; applies globally as technical benchmark |
US Brands that are not prioritizing accessibility are losing up to $6.9 billion annually to their competitors. It’s not just about compliance; accessibility is a stimulus for creating more engaging and productive digital experiences for ALL users.
In this video, Acquia’s CMO, Jennifer Griffin Smith, presents key strategies to grow your customer base, improve customer satisfaction/brand loyalty, and increase revenue.
Web accessibility is not a one-time project – it's an ongoing practice. A sustainable accessibility program follows four phases.
Start by scanning your site with an automated accessibility checker to identify common barriers – missing alt text, low color contrast, broken heading hierarchy, missing form labels. Automated scans are fast but catch only 30–50% of issues, so pair them with manual testing using keyboard navigation and screen readers.
Fix issues by severity – critical barriers first (keyboard traps, missing alt text on functional images, inaccessible forms), then progressively enhance the experience. Integrate accessibility requirements into your content authoring and development workflows so fixes happen at the source, not as a retrofit.
Test your remediated site with real users and assistive technologies. Web accessibility testing should include screen reader testing (NVDA, JAWS, VoiceOver), keyboard-only navigation, and evaluation against WCAG 2.2 Level AA success criteria. Verification confirms that fixes actually work for the people they're meant to serve.
Accessibility is not a destination – it's continuous. New content, design changes, and code updates can introduce regressions. AI-powered monitoring tools like Acquia Web Governance continuously scan your site and flag new issues before users encounter them, keeping your compliance posture strong over time.
Run a free accessibility scan to identify your site's WCAG compliance gaps and get a prioritized remediation roadmap.
| What is meant by web accessibility? |
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Web accessibility is the practice of designing and developing websites so that people with disabilities can use them. It covers a range of disabilities – visual, auditory, motor, cognitive, and neurological – and involves building sites that work with assistive technologies like screen readers, keyboard navigation, and voice control. Accessibility should be integrated into design and development from the start, not added after the fact.
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| What are the four principles of web accessibility? |
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The four principles are Perceivable, Operable, Understandable, and Robust (POUR). Perceivable means content can be seen or heard by all users. Operable means interfaces work through keyboard, voice, and other inputs. Understandable means content is readable and interfaces behave predictably. Robust means content works reliably across browsers and assistive technologies using clean markup and WAI-ARIA attributes.
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| Is web accessibility a legal requirement? |
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Yes. Most major markets have web accessibility legislation in place. In the United States, the ADA requires accessible websites, with the DOJ adopting WCAG 2.1 Level AA as the mandatory standard for government sites. The European Accessibility Act extends requirements across the EU. Canada, Australia, and the UK all have similar legislation. Refer to the Standards section above for a detailed breakdown by region. |
| What is the difference between WCAG and ADA? |
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WCAG is a technical standard that defines how to make web content accessible. The ADA is a U.S. law that requires accessibility. Think of WCAG as the "how" and the ADA as the "why you must." The DOJ has adopted WCAG 2.1 Level AA as the specific technical benchmark for ADA compliance under Title II, and courts apply the same standard under Title III for private businesses.
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| How do I know if my website is ADA compliant? |
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Perform an accessibility audit that combines automated scanning with manual testing against WCAG 2.1 Level AA success criteria. Automated tools identify common issues like missing alt text and low color contrast, while manual testing catches navigation, interaction, and content problems that scanners miss. If your site conforms to WCAG 2.1 Level AA, it is generally considered compliant with the ADA's requirements.
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| Can I be sued if my website is not accessible? |
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Yes. In the United States, thousands of ADA-related lawsuits are filed annually against businesses with inaccessible websites. Similar legal action is possible in any country with specific web accessibility legislation. The most effective protection is proactive compliance – conducting regular audits, remediating issues, and building accessibility into your workflows from the start.
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