One reason is better tooling. Modern SDKs, wallet libraries, APIs and infrastructure providers allow developers to interact with blockchains without building every component from scratch. Tasks that once required deep knowledge of node infrastructure can now be handled through relatively standard development workflows.

Frameworks have improved as well. Developers coming from JavaScript, TypeScript, React or backend environments can now build blockchain-connected applications using tools that feel much closer to conventional software development. That makes the frontend and application layer much less intimidating than it used to be.

The difficult part is still smart contract logic and security. Traditional developers are used to fixing bugs after deployment. With smart contracts, mistakes can involve irreversible transactions, locked funds or exploitable contract behavior. That changes how developers need to think about testing, access control and production releases.

Wallet interactions are another area where Web3 remains unusual. Instead of traditional account sessions, applications may need to manage wallet connections, signatures, chain switching and transaction confirmations. For users, this can feel unfamiliar. For developers, it introduces a new state-management problem that conventional web applications rarely have.

Multi-chain development adds even more complexity. Supporting Ethereum, Layer 2 networks and Solana may require different SDKs, transaction models and indexing infrastructure. A developer can understand general Web3 concepts while still needing to learn ecosystem-specific tooling.

I think the biggest improvement is that developers no longer need to understand every layer before building something useful. They can begin with familiar frontend or backend skills, integrate blockchain functionality gradually and learn the deeper protocol concepts as the product becomes more sophisticated.

At the same time, I would still argue that production Web3 development requires more security awareness than ordinary application development. The financial consequences of a mistake can be much larger, especially when smart contracts directly control user assets.

For developers who moved from traditional software into Web3, how difficult was the transition?

Which part was hardest to learn — smart contracts, wallets, blockchain data, security, transaction logic or multi-chain infrastructure?

And do you think Web3 development is now accessible enough for a strong Web2 developer to become productive within a few months?

One of the biggest challenges is maintaining a consistent user experience. A user may interact with Ethereum, a Layer 2 network and Solana through the same application, but each network behaves differently. Wallet connections, gas fees, confirmation times and transaction formats can all vary significantly.

Liquidity is another problem. A multi-chain application may technically support several networks, but that does not mean users have access to the same markets or assets everywhere. Liquidity can be concentrated on one chain while another network has much thinner markets, creating different execution quality depending on where the user is connected.

Cross-chain transfers make the architecture even more complicated. Bridges introduce additional smart contracts, security assumptions and waiting times. If an application depends heavily on moving assets between networks, bridge reliability can become one of the most important risks in the entire system.

Data infrastructure also becomes harder to manage. Ethereum-compatible chains can often share similar tooling, but Solana and other ecosystems may require completely different indexing systems, APIs and data models. Keeping wallet balances, transaction history and application state synchronized across several networks can become a major backend challenge.

Smart contract deployment creates another layer of complexity. Developers need to maintain different contract versions, track deployment addresses and ensure that upgrades remain consistent across multiple networks. A bug fixed on one chain but missed on another can create serious security problems.

Testing is probably one of the most underestimated parts of multi-chain development. Every supported network introduces new edge cases, and the number of possible interactions grows quickly. It becomes important to test not only individual contracts but also wallet behavior, RPC failures, bridge interruptions and inconsistent network states.

For me, the hardest part is making all of this complexity invisible to the user. A good multi-chain dApp should feel like one product, not several blockchain interfaces connected together.

What has been the hardest part of multi-chain development for you?

Is it wallet integration, liquidity fragmentation, cross-chain messaging, bridge security, data indexing, smart contract deployment or testing?

And do you think most dApps should become multi-chain, or is it better to build deeply for one ecosystem first?

For small projects, a public RPC endpoint may be enough. In production, that approach can quickly become unreliable because of rate limits, latency, inconsistent responses and limited historical data. Once an application has real users, infrastructure stability becomes part of the product experience.

RPC providers are usually the first layer developers think about. They give applications access to blockchain nodes without requiring teams to maintain their own infrastructure. The important difference between providers is not only speed, but also uptime, geographic distribution, supported chains, archive data and how well they handle traffic spikes.

Higher-level blockchain APIs can save even more development time. Instead of manually decoding every contract event or rebuilding token balances from raw chain data, developers can use APIs that already provide normalized wallet activity, NFT ownership, token transfers or transaction histories.

The trade-off is dependency. The more application logic depends on one infrastructure provider, the more serious an outage becomes. That is why production systems often benefit from multiple RPC endpoints, fallback providers or some form of routing between services.

Data consistency is another issue. Two providers may return blockchain data in slightly different formats or update at different speeds. For financial applications, trading tools or portfolio trackers, even small delays can create confusing results for users.

I also think developers should decide carefully which data really needs to come directly from the blockchain. Some information can be indexed and stored locally, while critical state should still be verified on-chain. That hybrid approach can improve both performance and reliability.

For teams building across several chains, multi-chain support becomes especially important. Maintaining separate infrastructure integrations for Ethereum, Solana and multiple Layer 2 networks can quickly become a significant engineering burden.

Which blockchain APIs or RPC providers are you actually using in production?

What matters most when choosing one — uptime, latency, supported chains, archive access, pricing, WebSocket reliability or developer tooling?

And do you rely primarily on a single provider, or do you maintain fallback RPC infrastructure in case your main service goes down?

The first decision is usually the blockchain environment. For EVM-based development, Ethereum and Layer 2 networks still offer a mature ecosystem of tooling, wallets and smart contract libraries. Solana can make more sense for applications that need low fees, high transaction throughput and frequent user interactions.

On the frontend, React and Next.js remain common choices because they integrate well with modern wallet libraries and Web3 SDKs. The bigger challenge is usually not the interface itself, but handling wallet connections, network switching, transaction states and error conditions in a way that feels natural to users.

For smart contracts, Solidity remains dominant across the EVM ecosystem. Tools such as Foundry and Hardhat can cover development, testing and deployment workflows, while established libraries help avoid rebuilding common contract logic from scratch. On Solana, Rust and ecosystem-specific frameworks provide a very different development experience.

RPC infrastructure is another part of the stack that becomes critical much earlier than many developers expect. A prototype may work perfectly with a basic public endpoint, but production applications need reliable access to blockchain data, rate-limit management, failover options and monitoring.

Indexing is also important. Querying the blockchain directly for every piece of historical information can become slow and expensive. Depending on the application, developers may use dedicated indexing services, event processors or their own database layer to make on-chain data easier to search and display.

Wallet integration deserves just as much attention as the smart contracts. Supporting major wallets is only the beginning. Good dApps should handle failed transactions clearly, show users what they are signing and minimize unnecessary approvals.

Security should be part of the stack from the beginning rather than something added before launch. Automated testing, static analysis, access-control reviews, monitoring and independent audits can all reduce the chance that a small coding mistake becomes a major exploit.

If you were building a production dApp today, what would your preferred Web3 stack look like?

Would you choose Ethereum or a Layer 2 with Solidity, Solana with Rust, or another ecosystem entirely?

And which tools do you consider essential for frontend development, wallet integration, RPC infrastructure, indexing, testing and smart contract security?