Community building is definitely essential. It builds a connections between your company and your users, it helps the company validate their idea, as well as the opportunity to receive feedback from users that can help improve your product! Community building for your business or platform brings nothing but success to your organisation.
Community building is a great way to know your customers. In turn, customers provide relevant data and feedback that can help your product and service to improve. In our company, we use RumbleTalk as a live chat and put out polls every now and then to get feedback from our customers.