Hanoi has become a hot area for user growth, especially in technology and services. This poses a problem for businesses to develop effective customer growth strategies to retain and expand market share. Businesses need to also optimize the user experience so that it can create real value for users. The customer growth strategy, another important factor is the attentive customer care and the regular updates to the product or service. According to experts, businesses apply customer growth strategies efficiently will find it easier to retain customers in Hanoi’s increasingly competitive market. One cannot overlook the role of social media in which businesses can quickly gain influence and rapidly grow customers. In conclusion, we must remember Hanoi’s user growth is not an end but a business’s obligation to address the needs of its customers.