What liquidity aggregation means in practice

Liquidity aggregation means making several sources available to one execution decision. It does not usually mean physically combining their assets into a universal pool. Each source can retain its own reserves, pricing rules and settlement conditions.

Access is different from ownership

Take two hypothetical A/B pools. One holds reserves in Contract One, the other in Contract Two. An aggregator can compare both and send part of a swap through each. The assets in Contract Two do not become part of Contract One merely because the user receives one combined result.

This distinction explains why the same liquidity can be advertised as accessible through many applications. Ten front ends pointing to one pool have not created ten times its depth. They share access to the same underlying market, and trades through any of them can change the state observed by the others.

0x's description of liquidity sources includes both onchain venues and offchain market makers. “Aggregated” therefore does not even require every source to have the same reserve model.

What a combined route must respect

A route still needs to honor each participating source's rules. An AMM computes output from its state; a dealer offer may have a finite size and expiry. The aggregation layer cannot erase those boundaries. It can select among them and assemble compatible operations.

Nor can it independently spend the same pool reserves twice in its planning. If two candidate branches share a pool, the second use must account for the first use's effect. A route diagram that looks like two independent branches may conceal this shared constraint.

For the user, the benefit is a broader set of executable alternatives. It can reduce the work of visiting individual venues and can expose paths that would be tedious to assemble manually. The useful metric remains the resulting exchange under matched conditions, rather than the number of websites that claim access to the same liquidity.