# Uniswap V3 & staking

*Learn about the new changes introduced to Uniswap V3*

**Authors:** [Mark Curchin](/c/people/mark-curchin)

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As a part of the third version of the protocol,
the Uniswap team has introduced Staking as a Service.
This Uniswap staking is a set of already deployed smart contracts
which enable anyone to launch liquidity mining programs.
These programs help to incentivize liquidity providers
and eventually boost the provision of additional liquidity inside the Uniswap v3
pools.

## Uniswap v3 vs v2

As we know, the concept of Uniswap v3 liquidity pools has remained the same
as in Uniswap v2.
What has changed is that liquidity providers do not receive ERC20 tokens
anymore.
Instead, the Uniswap team has introduced a new concept
where the information about liquidity is stored in NFT (ERC721) token,
which is minted upon liquidity provision.
The instance of this NFT token stores information about how much liquidity has
been deposited, who is the owner, and what are the lower and upper price ticks.

## Recommended to Read Next

If you’d like to learn more about Uniswap v3 liquidity tokens,
make sure to check the
[Uniswap v3 introduction](https://uniswap.org/blog/uniswap-v3) article.