A DEX router is a smart contract or system that helps route swaps through one or more liquidity pools.
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Short definition
Router is a DEX router is a smart contract or system that helps route swaps through one or more liquidity pools.
Simple explanation
Routers can find paths between tokens so users can swap even when there is no direct pool.
Why it matters
Routers often require token approvals and are central to many DEX swap flows.
Example context
A router may swap Token A to WETH, then WETH to Token B.