Sambung Kata is a web-based Indonesian word search tool designed to help players quickly find valid words based on prefixes or suffixes. The application uses a curated dataset of over 110,000 Indonesian words and performs all search operations server-side to ensure performance and data security. Built with Astro and deployed on Vercel, the platform implements server-side rendering, Redis-based rate limiting, and client-side caching to deliver fast and reliable search results. The project also includes a fully optimized SEO setup with clean URLs and structured metadata.