What's in the yield-aggregators

What's in the yield-aggregators? Why are yield aggregators needed?

What's in the yield-aggregators?

Yield aggregators are protocols that collate multiple yield farms in a single place in order to ease the process of farming. With many new farms popping up on the market, it can be tedious for one to hop from farm to farm. What strategies do they use, and how much more profitable are these strategies than investing in top defy protocols like AAVE or Compound? By yield-aggregator we mean protocols that collect users' funds into a "common pot" (woults) and then use them in different defi-protocols for profit.

Source: DefiLlama

The protocols are selected according to the following criteria:

1. networks: Ethereum/Arbitrum/Optimism/Polygon;

2. tokens: stabelcoins like USDC, USDT or DAI / ETH and its derivatives;

3. APY strategies/source: anything beyond autocampaign or giving away one's token;

4. TVL protocol: more than $10m.