Search functionality is essential in modern applications like Coupang, Baemin, and Yanolja, where users search for various items. However, developing search functionality is not straightforward. Especially when users expect Google-level search quality, the technical requirements become complex. There are two primary approaches to developing search functionality: using database query capabilities and using a separate search engine. Database query capabilities are suitable for simple searches, but they have limitations for complex search requirements. On the other hand, using a search engine can provide high-quality search functionality but increases development complexity and maintenance challenges. Therefore, early-stage services need to consider how to effectively implement high-quality search functionality.