RaumFi is a decentralized exchange (DEX) built on the StarkNet platform by Raum Network. It provides a fast, secure, and reliable trading experience for its users with minimum gas fees.

The exchange operates on a tier system, which allows users to receive benefits such as lower fees, higher trading limits, and access to exclusive features based on their level of participation. The tiers range from Tier 1 to Tier 5, with each tier requiring a specific amount of RN token staked.

RaumFi also offers both fixed and variable staking services to its users. Fixed staking allows users to lock up their RN tokens for a specific period of time, and in return, they receive a guaranteed return on their investment. On the other hand, variable staking allows users to earn rewards based on the trading volume on the exchange.

By using the RaumFi DEX and participating in its tier system and staking services, users can benefit from reduced trading fees, increased trading limits, and earning rewards on their RN token holdings.