Decentralised Finance (DeFi)

DeFi is the collective term for financial services built on public blockchains using smart contracts. Instead of banks, brokers, and clearinghouses, DeFi protocols use code to facilitate lending, borrowing, trading, and asset management — open to anyone with an internet connection.

Core Primitives

• Decentralised Exchanges (DEXs) — Uniswap, Curve, and others use automated market makers (AMMs) instead of order books, enabling permissionless token trading
• Lending & Borrowing — Aave, Compound, and MakerDAO allow users to lend assets for yield or borrow against collateral
• Stablecoins — DAI, USDC, and others provide price-stable assets essential for DeFi transactions
• Yield Aggregators — Yearn and similar protocols automatically optimise yield across multiple strategies
• Derivatives — dYdX, GMX, and others offer perpetual futures and options on-chain

Why It Matters

DeFi represents a fundamental rethinking of financial infrastructure:

• Permissionless — no KYC, no minimum balances, no geographic restrictions
• Transparent — all transactions, reserves, and protocol logic are publicly auditable
• Composable — protocols can be combined like building blocks ("money legos")
• 24/7 — markets never close, settlement is near-instant
• Non-custodial — users retain control of their assets

The Evolution

DeFi has matured significantly since "DeFi Summer" in 2020:

• 2020 — Explosive growth driven by yield farming and liquidity mining
• 2021 — TVL peaked above $180 billion; institutional interest grew
• 2022 — Bear market stress-tested protocols; CeFi collapsed while DeFi held
• 2023-2024 — Focus shifted to real yield, institutional integration, and regulatory compliance
• 2025 — DeFi protocols generating real revenue; convergence with traditional finance accelerating

Risks

• Smart contract risk — bugs can lead to catastrophic losses
• Oracle manipulation — price feed attacks can drain protocols
• Regulatory uncertainty — evolving legal frameworks create compliance challenges
• Impermanent loss — liquidity providers can lose value relative to simply holding assets
• Systemic risk — composability means failures can cascade across protocols

The Thesis

DeFi is not a speculative experiment — it is the next generation of financial infrastructure. As protocols mature, generate real revenue, and integrate with traditional finance, DeFi will become the default settlement layer for an increasing share of global financial activity.