Chainlink Data Feeds are the quickest way to connect your smart contracts to the real-world market prices of assets. For example, one use for data feeds is to enable smart contracts to retrieve the latest pricing data of an asset in a single call.
1.Price Feeds
2.Proof of Reserve Feeds
3.L2 sequencer uptime feeds
Chainlink Data Feeds can be used in combination to derive denominated price pairs in other currencies. If you require a denomination other than what is provided, you can use two data feeds to derive the pair that you need. For example, if you needed a BTC/EUR price, cu ould take the BTC/USD feed and the EUR/USD feed and derive BTC/EUR using division.
(BTC/USD) / (EUR/USD) = BTC/EUR