Modern blockchains process transactions well, but they were never designed to store large amounts of data efficiently. Images, video, AI datasets, and historical records quickly become too expensive or impractical to keep on-chain, pushing most applications back toward centralized cloud providers or slow, inflexible decentralized alternatives.
Walrus is an attempt to fill this gap by acting as a decentralized “blob store” rather than a general-purpose blockchain. It separates data storage from execution, using erasure coding to reduce replication costs and relying on the Sui blockchain to coordinate metadata, pricing, and incentives. The system is designed to favor fast data retrieval and programmable access, making it more suitable for applications that need frequent reads instead of permanent archival.

One clear strength is cost efficiency for large, frequently accessed data. A clear risk is its reliance on Sui and relatively new storage mechanics that have limited real-world testing. Adoption, regulation, and pricing stability will take time to prove out. If these pieces mature together, Walrus could become a practical storage layer for certain data-heavy decentralized applications.


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