Explanation:

Accessibility is about designing an experience to meet everyone’s needs, including those with disabilities. In marketing, those experiences happen anywhere users can interact with your brand, such as websites, emails, or even trade shows, to name a few. Without designing for inclusion, your marketing simply can’t fully serve the more than one billion people worldwide who have disabilities. 
It matters because brands that leverage accessibility in their marketing expand their reach to potential customers, grow their businesses, and have a positive impact on their audience and in their markets. They may also achieve compliance and legal requirements, which exist in many countries.
Being both available and reachable for customers is critical for all businesses, big and small. These qualities, or lack thereof, can make or break your business. There are many businesses consumers can choose from, and they are more willing to go with the company that is attentive, and giving them the best service. In the internet age, the consumer is more informed, more vocal, and more willing to share their experiences with other consumers. Improving your company’s customer responsiveness online and off will help to please customers and ensure they purchase from you again and again.