Compared to Filecoin and Arweave, what are the advantages of Walrus? This question has been asked by many people. I have compiled the information and found that the key differences lie in three dimensions.

**The most interesting part is the technical architecture.** Traditional distributed storage solutions—like Filecoin and Arweave—mainly adopt a one-dimensional erasure coding scheme. Walrus has developed its own two-dimensional Red Stuff encoding technology. Simply put, this adds an extra layer of redundancy, making data recovery more efficient and reducing storage space utilization.

**Cost advantages are thus created.** Under the condition of ensuring the same data reliability, Walrus's storage costs can be significantly reduced. Industry analysis indicates that in some scenarios, it can even be two orders of magnitude cheaper than traditional solutions. This is indeed very attractive for projects aiming to deploy large-scale distributed storage.

**The ecosystem positioning is also different.** Walrus is deeply integrated into the Sui blockchain, making "programmable storage" not just a concept but something that can actually be used. For example, dynamic updates of NFT metadata are much simpler to implement on Walrus. This close collaboration between on-chain and off-chain is something that other storage protocols have yet to achieve.