The development of information technology today is much faster than in previous years, making business people required to follow developments by implementing technology and communication intensively in various sectors. Customer Relationship Management (CRM) is one important aspect in building good relationships between companies and customers.The aims of the study were  to design and implement a web-based CRM system that suits the needs of this company, a company that is engaged in the production and sales of furniture. The data was obtained through (1) field research, (2) library research, and (3)  The method used in the research is the waterfall system development method by using PHP and MySQL programming languages The results of the study indicate that this system has an average presentation value of 84.07%, indicating that the system is very feasible to implement. This system is able to increase interaction and communication with customers, which in turn significantly increases customer satisfaction and improves the quality of service overall. Thus, this system can be the right solution for this company in overcoming the challenges in the increasingly competitive business era and achieving competitive advantage in the furniture industry.

The use of technology in website-based buying and selling transactions has grown rapidly, especially in e-commerce. However, marketing of processed sea cucumber products is still done conventionally, which causes limited market reach and transaction efficiency. This study aims to develop a web-based e-marketspace system to improve the effectiveness of marketing and transactions of processed sea cucumber products. The method used in this study is the Web Information System Development Methodology (WISDM), which allows for rapid and sustainable system development according to user needs. The results of the study indicate that the system developed can improve transaction efficiency, expand marketing reach, the development of a website-based e-marketspace system for selling sea cucumbers can provide significant benefits for business actors in increasing efficiency and marketing reach. This system simplifies the transaction process by providing a digital platform that can be accessed by customers widely, thus supporting the growth of the marine product industry, especially processed sea cucumber products.