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August 26, 2025Cryptopolitan logoCryptopolitan

What is DeFi in Crypto?

Traditional financial (TradFi) systems have served us relatively well for ￰0￱ growing misgivings about them, like the much-publicized Trump family debanking, have sent us looking for suitable ￰1￱ outcome has been the discovery of decentralized finance (DeFi), which is the essence of this ￰2￱ it, we explain what DeFi in crypto is, how it works, its advantages, risks, and future ￰3￱ DeFi (Decentralized Finance) The best way to understand DeFi is to start by defining the concept. Next, you must know the features that distinguish it from TradFi services. Finally, it is important to appreciate the sector’s role in the wider cryptocurrency ￰4￱ Definition of DeFi DeFi is a peer-to-peer (P2P) financial system running on blockchain ￰5￱ foundation is smart contracts that facilitate trustless cryptocurrency transactions between trading ￰6￱ system offers everything traditional finance (TradFi) set-ups do, such as lending, borrowing, insurance, and ￰7￱ sector is one of the most burgeoning ones within crypto, with a total value locked (TVL) of $148.991 billion at press time, a massive growth from roughly $800 million in January ￰8￱ DeFi Differs from Traditional Finance DeFi and TradFi are distinct approaches to managing financial ￰9￱ the latter relies on gatekeepers to facilitate transactions and services, DeFi uses blockchain technology and smart contracts to bypass ￰10￱ table below outlines their key ￰11￱ Decentralized finance Traditional Finance Organization Decentralized: Uses smart contracts running on public blockchains.

Centralized: Financial institutions act as agents, enabling all ￰12￱ model Trustless, these P2P systems run on code and ￰13￱ dependence on trusted third parties like banks and ￰14￱ Permissionless: Access is open to anyone with a crypto wallet and an internet connection. Doesn’t require Know Your Customer (KYC) verifications. Permissioned: Access is restricted only to those who pass rigorous KYC checks instituted by the trust ￰15￱ Fully transparent, as all the transactions happen on public blockchains Very limited transparency because transactions are recorded on private ￰16￱ Largely unregulated as they operate outside the traditional regulatory ￰17￱ that is changing in many ￰18￱ regulated, with service providers following strict regulatory ￰19￱ Type It uses digital assets and tokens as ￰20￱ fiat currencies such as the USD and EUR and traditional assets like stocks, bonds, and ￰21￱ Control Users have full and direct control of their assets through their private keys and seed ￰22￱ have limited control of their assets as the service provider is their ￰23￱ times and fees Absence of intermediaries gives them near instant transaction completion ￰24￱ can also be very ￰25￱ can take a long time to complete as they must pass through a third ￰26￱ also makes their fees relatively higher than those of ￰27￱ DeFi Matters in the Crypto Ecosystem Decentralized Finance is vital to the crypto ecosystem as it enables financial services without ￰28￱ aspect democratizes access, allowing anyone with internet and a crypto wallet to participate.

Moreover, its transparency builds trust between counterparties through ￰29￱ drives innovation with tools like yield farming and automated market makers, attracting billions in ￰30￱ offering financial sovereignty and reducing costs, DeFi showcases crypto’s real-world utility, fueling adoption and transforming our ￰31￱ Does DeFi Work? DeFi uses interconnected technologies to provide intermediary-free financial services. Here’s a breakdown of the nuts and bolts that make it tick: Smart Contracts on Blockchains (Ethereum, Solana, BSC) Smart contracts are the heart of the DeFi crypto ￰32￱ self-executing digital agreements direct transactions happening on the ￰33￱ typical contracts that rely on a trust agent, these automatically complete trades once the transacting parties meet their ends of the ￰34￱ immutability and transparency are the foundation of the trust between both sides to a ￰35￱ contracts cover the whole gamut of DeFi transactions and are a brainchild of the Ethereum network.

However, they are also making headway in newer DeFi-centric networks like Solana and Binance Smart Chain (BSC). The Role of Decentralized Applications (dApps) Accessing DeFi protocols would have been challenging were it not for dApps, the websites, and mobile applications linking you to smart ￰36￱ run on permissionless networks, giving you full control over your funds and ￰37￱ common dApps include decentralized exchanges (DEXs) such as Uniswap, lending protocols including Aave, non-fungible tokens (NFTs) marketplaces like OpenSea, and crypto wallets as ￰38￱ Pools and Automated Market Makers (AMMs) The last key cog in the DeFi juggernaut is a set of interdependent concepts, liquidity pools, and automated market makers (AMMs).

The first are smart contract-based reserves of crypto ￰39￱ example, an ETH/USDC pool typically contains equal dollar values of both digital ￰40￱ (liquidity providers) deposit their tokens into these community-driven “trading pots,” for which they earn trading fees proportionate to their ￰41￱ then kick in, providing the mechanism for using liquidity ￰42￱ protocols use algorithms to price assets based on the available ￰43￱ are similar to the conventional order book, only that they are trustless, and instead of matching buyers and sellers, they link them to liquidity pools 24/7. Key Features of DeFi Though upending the traditional financial system will take a while, DeFi is creating compelling user-first ￰44￱ as the technology matures, the following core features will play a big role in its ￰45￱ and Open Access DeFi is your hustle-free ticket to crypto trading and ￰46￱ the lengthy application process, rigorous checks, and slothful approvals characteristic of TradFi ￰47￱ only need a stable internet connection and a crypto wallet to ￰48￱ are no minimum balance requirements, geographic restrictions, or discrimination based on your background or ￰49￱ all-embracing approach breaks down the barriers that have historically denied some people financial ￰50￱ and Auditability TradFi service providers are often opaque about their actions and ￰51￱ so with ￰52￱ these systems run on blockchain and smart contract tech, their transactions are publicly ￰53￱ can track money flows, verify how protocols manage funds, and even audit their smart contracts for ￰54￱ level of openness pushes accountability, increasing the whole system’s trustworthiness.

Plus, it levelizes the playing field for all users. Non-Custodial Control of Assets Unlike in centralized finance (CeFi), where service providers hold your funds, DeFi gives full control of your assets through private ￰55￱ crypto wallet acts as a digital safe for which only you have the keys, and you manage it through smart ￰56￱ non-custodial approach shields you from counterparty risks like debanking and bankruptcy. Besides, you have 24/7 access to your funds and a say in the protocol’s governance ￰57￱ Tip Self-custody of crypto assets is financially empowering but comes with extra ￰58￱ wallet exploits may set you back significantly, and there might be no recourse for lost or misplaced private ￰59￱ with Other Protocols One of DeFi’s key draws is that it supports seamless connection and data sharing across ￰60￱ feature allows you to combine different tools, creating new financial products and experiences customized to your ￰61￱ instance, you can borrow ETH on one protocol, lend it on a different one, and stake your profits on ￰62￱ interoperability fuels innovation far beyond the siloed TradFi ￰63￱ of DeFi Applications From trading and lending to creating stable assets and beyond, DeFi is reshaping how we interact with money.

Here’s a look at some of the most exciting applications driving this ￰64￱ Exchanges (DEXs) like Uniswap & Curve Imagine trading cryptocurrencies without relying on a third party like a centralized exchange. That’s exactly what decentralized exchanges ￰65￱ like Uniswap and Curve allow users to swap tokens directly in a completely trustless and transparent ￰66￱ innovative use of liquidity pools means you can trade with lower fees and enjoy seamless access to diverse ￰67￱ & Borrowing Platforms like Aave & Compound Do you have idle assets you’d want to invest in for gain? DeFi has your solution through its credit offering platforms like Aave and ￰68￱ P2P crypto lending marketplaces allow users to loan each other at ￰69￱ it takes is depositing your holdings into a lending pool from which borrowers take ￰70￱ contract technology and market forces determine the interest ￰71￱ can also borrow funds from the said pools upon providing some ￰72￱ and MakerDAO’s DAI Perhaps crypto’s greatest infamy is its wild price swings.

Luckily, we have ￰73￱ cryptocurrencies strive for stability by pegging their values to steady assets, typically fiat currencies like the USD. MakerDAO’s DAI stablecoin takes this pegging a notch ￰74￱ of shoring its value with real-life dollars, it uses a smart contract-run vault of other ￰75￱ shift makes it a truly decentralized ￰76￱ and other stablecoins are a boon to the DeFi ￰77￱ stability makes transacting, saving, and building other financial products ￰78￱ Farming & Staking If you’re looking for ways of creating passive crypto income, yield farming and staking are some of the easiest ways of doing ￰79￱ the former, farmers (investors) provide DEXs and lending protocols with liquidity in exchange for ￰80￱ process involves moving funds from one protocol to another, looking for the best yield (returns), hence the term.

Meanwhile, staking involves locking your crypto to support proof-of-stake (PoS) blockchains like Ethereum. It’s akin to holding a dividend stock in ￰81￱ deposit helps secure the network and validate its transactions, for which it pays you back with staking rewards (dividends) in ￰82￱ of caution Both methods can earn you high returns but come with risks like impermanent loss and market ￰83￱ do your due diligence and only invest funds you are comfortable ￰84￱ Insurance & Synthetic Assets Beyond lending and trading, decentralized finance crypto is big on securing and futureproofing your investments. That’s the reason behind cutting-edge products like DeFi insurance and Synthetic ￰85￱ former works like your regular insurance, albeit ￰86￱ insurance platforms, such as Nexus Mutual, cover you against losses resulting from smart contract hacks and exploits or platform ￰87￱ assets, on their part, are digital tokens mirroring prices of real-world assets (RWA) like securities, commodities, and even fiat ￰88￱ like BitShares, Synthetix Network, and Mirror Protocol allow you to mint synths – synthetic versions of RWA – without holding the actual ￰89￱ instance, you can trade synthetic Apple stock (sAAPL) without owning the tech giant’s ￰90￱ tokenizing RWA, synths open up a new frontier of decentralized trading without the limitations of time and geographical ￰91￱ of DeFi Whether it’s reaching the unbanked, reducing transaction costs, or enabling borderless trades, DeFi brings financial services to a broader audience in smarter, faster ￰92￱ for the Unbanked The World Bank estimates that nearly 1.4 billion people don’t have access to formal financial systems, which keeps them in ￰93￱ crypto offers a lifeline to this unbanked population by simplifying their onboarding to financial products and services.

A smartphone and internet connection are all one needs to start saving, borrowing, lending, and investing, no matter how far-flung they may be ￰94￱ Costs and Faster Settlements Decentralized finance crypto operates on a P2P basis, thus cutting out intermediaries and significantly impacting transaction speeds and ￰95￱ DeFi, users needn’t go through go-betweens, hastening settlement times while saving on transaction ￰96￱ and Global Reach All DeFi transactions occur on a public blockchain, allowing for easy verification. Additionally, it’s a permissionless system, meaning you can trade with anyone, anywhere, ￰97￱ aspect makes it a truly borderless financial ￰98￱ and Challenges of DeFi It isn’t always sunshine and rainbows in the DeFi space.

That’s because the same openness and innovation that make it a novelty come with risks you should understand before diving ￰99￱ Contract Exploits & Hacks Code is the cornerstone of smart contracts, but these can have vulnerabilities, turning them into a hacker’s ￰100￱ exploit buggy or flawed smart contracts to drain funds from affected crypto ￰101￱ example, a hacker in the 2022 Poly Network attack 2022 made away with over $600 ￰102￱ such events calls for regular third-party audits of any protocol’s smart contract to reveal any errors for timely ￰103￱ Pulls and Fraudulent Projects One of decentralized finance crypto’s strongest points, permissionlessness, is ironically its weakest link ￰104￱ openness attracts everybody, including those with malicious ￰105￱ is a common occurrence here, with rug pulls leading the ￰106￱ this scam, unscrupulous developers hype a new project, attracting unwitting ￰107￱ then withdraw the funds, leaving their victims holding worthless ￰108￱ avoid falling for such schemes, you must research projects thoroughly.

Also, be extra vigilant about projects promising impossible ￰109￱ Uncertainty DeFi is still in its nascency. Consequently, many governments are still grappling with how to classify and regulate the different asset classes falling under its ￰110￱ uncertainty creates risks for developers and users, as new regulations could impact the legality or functionality of certain protocols/products. Overcoming this challenge requires watching crypto regulation news and trends in your ￰111￱ and High Gas Fees While the growing adoption of DeFi is a major boost for mainstreaming crypto, it comes with a special challenge – the scalability of existing ￰112￱ popular protocols run on the Ethereum blockchain, which is prone to clogging in periods of high ￰113￱ network congestion causes high gas fees, making it uneconomical for small transactions, thus pricing out many potential ￰114￱ 2 solutions and alternative blockchains offer relief, but often at the cost of security or decentralization, the classic blockchain ￰115￱ Future of DeFi in 2025 and Beyond The decentralized finance sector is quickly positioning itself as an integral part of the global financial ￰116￱ looking at 2025 and beyond, several key trends are shaping what its future could look ￰117￱ Adoption Once skeptical of the concept, TradFi institutions like banks and asset management firms are now actively embracing ￰118￱ institutional adoption deepens liquidity, reduces volatility, and increases the sector’s ￰119￱ importantly, it creates a feedback loop where we reimagine TradFi concepts through decentralized lenses, creating more hybrid products such as BlackRock’s BUILD tokenized ￰120￱ permissioned DeFi protocols to snowball as custody solutions mature and regulatory frameworks solidify.

Real-World Assets (RWAs) in DeFi RWAs are increasingly entering DeFi, buoyed by their rapidly maturing infrastructure. Today, Oracle networks provide reliable price feeds for non-crypto assets, while legal frameworks are emerging to ensure proper asset backing and compliance. Moreover, Smart contracts are evolving to handle complex asset characteristics like dividend distributions and voting ￰121￱ this infrastructure solidifies, we’ll likely see traditional assets migrating to blockchain-based systems not as an alternative, but as the primary method of issuance and ￰122￱ of Layer 2 and Cross-Chain DeFi High gas fees and slow transaction times have long plagued Ethereum, DeFi’s hub.

However, Layer 2 (L2) scaling solutions like optimistic and zero-knowledge (ZK) rollups are changing the ￰123￱ “express lanes” run on Layer 1 blockchains, allowing off-chain transaction processing. Thus, they increase throughput and drastically reduce costs, making DeFi applications accessible. Meanwhile, cross-chain DeFi through sidechains and bridges supports the seamless movement of assets and data across ￰124￱ is essential for a future where users won’t care about which network they’re on, as liquidity becomes more unified across the entire crypto ￰125￱ and Mainstream Integration Governments and financial bodies worldwide are actively working on regulating digital ￰126￱ some purists may view this as a threat to decentralization, it’s a necessary step for mainstream DeFi integration.

We’re seeing more regulation on stablecoins and digital securities, through legislation like the EU’s MiCA framework and the US’s Genius ￰127￱ laws will provide legal certainty and encourage institutional ￰128￱ clarity will pave the way for DeFi to become a more legitimate and accessible alternative to traditional finance.

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