Aave is one of the biggest DeFi platforms in 2025 with more than $45B locked. It lets you lend, borrow, and earn interest without banks. In this guide, we explain how Aave works, its key features, fees, and risks. You will also see step-by-step instructions and how Aave compares to other lending protocols.
Aave is one of the biggest names in decentralized finance. In 2025, the platform has more than $45 billion total value locked (TVL) across Ethereum, Polygon, Arbitrum, and other blockchains. This makes it the most dominant DeFi lending protocol today.
In this review, we look at what Aave is, how it works, its features, fees, pros and cons, and how you can use it step by step. We also compare it with other lending platforms like Compound and MakerDAO.
Aave is a decentralized, non-custodial lending protocol. That means you can lend and borrow crypto without a bank or middleman. Everything runs on smart contracts.
At its core, Aave is a pool-based lending system. Users supply assets, and borrowers take from those pools.
To borrow, you must deposit more than you borrow.
The protocol keeps evolving. In 2025, here are some of the standout features:
| Feature | V2 | V3 | V4 (Upcoming) |
| Cross-Chain | Limited | Multi-chain | Fully modular |
| eMode LTV | No | Up to 94% | Enhanced automation |
| Gas Costs | Standard | Optimized | AI-driven |
| Pros | Con |
| High liquidity, deep markets. | Not beginner-friendly. |
| Competitive APYs (5 to 10% on stables). | Risk of liquidation in volatile markets. |
| Unique flash loans. | Some complexity with advanced features. |
| GHO stablecoin. | |
| Strong security since 2020. | |
| Multichain support = lower fees. |
Aave is the top DeFi lending protocol in 2025. It combines deep liquidity, advanced tools, and strong security.
It may not be the easiest for beginners, but for users who want reliable lending and borrowing, Aave is one of the best.
| Founded | 2017 |
|---|---|
| Rebranded | 2020 (As Aave) |
| Founder | Stani Kulechov (Finland) |
It’s a protocol where you can lend and borrow crypto without banks.
Depends on the asset. Stables often give 4–8%.
Yes, it has more features like flash loans.
Loans without collateral that must be repaid in one transaction.
Yes, audited and with strong risk controls.
A native stablecoin backed by Aave deposits.
Upcoming upgrade in late 2025 with modular design and AI tools.
Binance, Uniswap, Coinbase.
I'm Marten, a crypto nerd and tech writer who’s been deep into blockchain since 2015. I started with Bitcoin trading and later got into Ethereum and smart contracts. Over the years, I’ve tested all kinds of platforms, from DeFi tools and P2P betting sites to Web3 apps. On kryptium.co, I write simple and honest articles to help people understand what’s happening in crypto. I focus on real stuff: how things work, what tools are worth using, and what to watch out for. My background in software development helps me break down complex topics so others can actually use the info. I believe in open, decentralized systems and think crypto should be easier to understand, even for beginners. That’s what I try to do with every post I publish.
