Blockchain is not dead. Actually, quite the contrary is happening in the past year. There are more and more interest and it's gaining a lot more traction than before. A big portion of this growth is due to "DeFi" AKA Decentralised Finance applications. From the hyped cryptocurrencies, we are now seeing the new next wave of this transformation as we see more financial products being developed: lending, exchanges, yield farming, and pools just to name a few.

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Developing DeFi Apps with Ethereum
Presented by Michael John Pena
Microsoft MVP: Azure
michael@datachain.consulting
@mjtpena
https://michaeljohnpena.com
Disclaimer
I am not a financial advisor. Cryptocurrency investing involves a lot of risks, make sure to do your
own research.
Whatever content I present is expressed by myself and does not represent my clients.
The industry and technologies are still maturing, and may not be applicable to "production
grade" scenarios.
Quick Agenda
Why DeFi and blockchain
DeFi use cases
Getting Started with DeFi
Why DeFi and blockchain?

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Image taken from: https://defipulse.com
Developer / Tech
A lot of demand to DApps developers.
A lot of saturation in open source community.
The tools and technologies are improving in a rapid pace.
Startup Founder
An opportunity to start a new product or service offering.
Opportunities to raise capital or funding.
The market is still maturing and open to innovation.
Works in Finance
DeFi "has been" disrupting traditional financial products
Opportunity to adapt and innovate.
Leverage DeFi side-by-side with your existing products.
What is DeFi?
Decentralised infrastructure

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Image taken from: Stably blog on Medium
DeFi is similar to how we call Financial Technologies as "FinTech". It's an industry
vertical use of decentralised technologies that are specific to Financial products. This
includes exchanges, lending & borrowing, interests & compounds, staking &
liquidity pools, and many more.
What makes a product DeFi?
Transparency
We can trace what's happening with assets

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SushiSwap contract on Ethereum - Accessibility - Inclusive to all users all over the world. -
Image taken from Forbes: How DeFi is Reinventing The World's Financial System - Accountability - We know
who are involved in a DeFi product -

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-
Interoperability - Ideally it should be coin and chain independent -

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__Image taken from __Binance Academy Article
Use Case #1 - Exchanges
UniSwap
Uniswap is a fully decentralized on-chain protocol for token exchange on Ethereum that
uses liquidity pools instead of order books.

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https://uniswap.exchange
SushiSwap
Sushiswap is a fully decentralized on-chain protocol for exchanging tokens through a
process of automated market-making (AMM) which uses 'liquidity pools' rather than an
orderbook.
https://app.sushi.com
PancakeSwap
PancakeSwap is a decentralized exchange built on Binance Smart Chain.
https://pancakeswap.finance
Use Case #2 - Lending
Compound
Compound is an algorithmic money market protocol on Ethereum that lets users earn
interest or borrow assets against collateral.

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https://app.compound.finance/
Aave
Aave (from the Finnish word for "ghost") is an open source non-custodial protocol on
Ethereum for decentralized lending and borrowing
https://app.aave.com/
MakerDAO
MakerDAO is a decentralized credit platform on Ethereum that supports Dai, a stablecoin
whose value is pegged to USD.

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https://oasis.app
Use Case #3 - Assets / Yields
Synthetix
Synthetix is a decentralized platform on Ethereum for the creation of Synths: on-chain
synthetic assets that track the value of real-world assets.
https://staking.synthetix.io - Yearn.finance - yearn.finance is a decentralized ecosystem of aggregators that
utilize lending services such as Aave, Compound, Dydx, and Fulcrum to optimize your token lending. -

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https://yearn.finance
Toolbox to Get Started
Your Asset
Your own fungible token? (ERC-20) / (BEP-20)
https://ethereum.org/en/developers/docs/standards/tokens/erc-20/
https://github.com/binance-chain/BEPs/blob/master/BEP20.md
NFTs / Non-fungible tokens? (ERC-721) / (EIP-1155)
https://ethereum.org/en/developers/docs/standards/tokens/erc-721/
https://eips.ethereum.org/EIPS/eip-1155
Chain
Ethereum (MainNet)
Binance Smart Chain
Wallet
Metamask (Web)

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Argent (Mobile)
Stablecoin

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DAI
Tether (USDT)
~ Or create your own
Other DeFi prodcuts
Exchange, Lending, Derivatives, Payments, etc.
Challenges of DeFi
Scalability
Regulations
Really good use cases
Quick Demo
ERC20 + Farm Token
Summary
DeFi gives a new wave of more materialised crypto
The market is still maturing and has a lot of room to grow
Ethereum is the most popular chain to build DeFi
Resources
https://defipulse.com
https://defiprime.com
https://docs.microsoft.com/en-us/learn/paths/ethereum-blockchain-development/
https://ethereum.org/en/developers/tutorials/create-and-deploy-a-defi-app