The rapid development of technology in the era of the industrial revolution 4.0 made the business competition even tighter, especially for primary needs, one of which is the local industry, which is engaged in fashion. Many fashion industries use eCommerce (EC) but have not increased their sales because the primary key to sales is useful marketing techniques. Many scientists who research one EC development with SEO but only pay attention to rankings do not increase sales. In this study, we implement the SEO method with indexing, crawling, and meta tags techniques collaborated with the user interface using the silo structure technique and spoke and hub structure. The purpose of doing so is to make customers feel more comfortable browsing the EC web. This research investigates the possibility of applying those techniques to the sales in a 6-month mini longitudinal study. We found out that this combination has increased the EC monthly income by 4 to 10% each month. It can be concluded that the SEO method will be more optimal in collaboration with other techniques such as the silo structure technique and spoke and hub structure. Suggestions for further research are collaborating SEO with other social media integration methods and location-based services to benefit an EC establishment.