The list of  importance of building a website is so long; here is a few of them:
It helps in boosting brand recognition and making you trustworthy in the market. A managed online store where your customers visit and make purchases. You can collect qualified leads and analyze your visitor purchasing pattern. Customers can learn more about your product or services on the internet. You can add product photos and videos in certain places. Integrate your website with your social media platform and all the marketing touchpoints. It also helps provide payment gateways to spread your business worldwide.