Sub-second search is the starting point of every order on Zepto, a fast-growing quick-commerce platform in India, founded in 2021 with endeavor to provide delivery in minutes. Powering the search experience is Amazon OpenSearch Service, a managed retrieval engine built on OpenSearch for agentic AI, search, and analytics.
Zepto operates hundreds of delivery hubs (dark stores) across Indian cities where it provides logistics services to sellers operating on Zepto Platform. Each hub maintains its own inventory levels, pricing, and assortment spanning thousands of Stock Keeping Units (SKUs). As the company scaled to hundreds of hubs, driving linear increases in indexing volume and maintaining sub-second product search latency while controlling costs became increasingly challenging.
To address this, Zepto migrated its OpenSearch Service data nodes from memory-optimized instances to OpenSearch Optimized instances. This instance family is purpose-built for high…