There are four basic ways to grow revenue. First, a company can stimulate sales of existing products and/or services. This can be done by expanding one's share of the market through improved pricing, promotion, and advertising. Second, a firm can take their existing product/s and/or service/s into a new market. Third, a firm can increase overall sales though introduction of new products and/or services. These new items need not be completely new but may represent an extension of an already existing product line or may be adding a service to a product company or vice versa. Finally, growth can occur though acquisition of business lines or entire companies.
An important thing to remember is that the ultimate goal is to increase the profitability of your business venture. So, while it is good to grow revenue, it is not good to grow it without keen attention to monitoring costs - operating, production, overhead and administrative.