Choosing a Layer 2 for Your dApp

Layer 2 networks made Ethereum-style apps affordable for everyday users. Instead of paying mainnet fees for every action, users interact with networks that batch transactions and post data back to Ethereum. For builders, the hard part is choosing between several mature options that look similar from a distance.

This guide focuses on practical factors that affect a real product, rather than benchmarks.

Start from your users

The network your users already use beats the network with the best technical specs. Ask a few questions:

• Which wallets do your target users hold, and which networks do those wallets show by default?
• Where do they keep stablecoins and other assets today?
• Which apps do they use daily, and on which networks?
• Do they buy crypto through exchanges that support direct withdrawals to that network?

If your users would need to bridge before trying your app, many will not try it.

Compare fees in context

Fees on major layer 2 networks are usually low, but they vary with activity and with how each network posts data to Ethereum. Rather than comparing a single number, estimate what your users will pay for a typical session, such as connecting, approving a token and making two transactions.

If your app involves many small interactions, such as games or social features, low and predictable fees matter a lot. For occasional high-value actions, fee differences matter less than liquidity and trust.

Understand the security model

Layer 2 networks differ in how they inherit security from Ethereum:

Aspect	Question to ask
Proof system	Does the network use fraud proofs, validity proofs or something else, and is it live?
Sequencer	Who orders transactions, and what happens if the sequencer goes offline?
Upgrades	Who can upgrade the contracts, and is there a delay before changes take effect?
Withdrawals	How long do users wait to withdraw to Ethereum through the native bridge?
Data availability	Where is transaction data published?

Independent research sites track these details and assign risk ratings. Read them before committing, and explain the relevant points to your users honestly.

Check tooling and infrastructure

Development speed depends on tooling. For each candidate network, confirm:

1. Reliable RPC providers, including free public endpoints for testing
2. A block explorer with contract verification
3. Indexing services or subgraph support
4. Wallet support in popular browser and mobile wallets
5. Testnets that stay stable and have working faucets
6. Oracles and other infrastructure your app needs

EVM-compatible layer 2 networks share most tooling, so switching or adding networks later is easier. Still, small differences such as gas estimation or precompiles can cause surprises.

Liquidity and composability

If your app depends on other protocols, such as exchanges, lending markets or stablecoins, check that they exist on the network with enough depth. Native USDC availability is often a deciding factor for payment and finance apps.

Composability also affects growth. Networks with active ecosystems give your app partners, integrations and users who explore new apps.

Ecosystem support

Many networks run grant programs, developer relations teams and marketing support for apps building on them. Support can help a small team with audits, visibility and introductions. Treat it as a bonus rather than the main reason to choose.

Build a shortlist

Write down two or three candidates and score each on:

• User presence
• Typical session cost
• Security model maturity
• Tooling quality
• Liquidity for your needs
• Ecosystem fit

Deploy a prototype to your top two choices and test the full user flow with real wallets. Hands-on testing often reveals issues that documentation hides.

Plan for more than one network

Many apps eventually support several networks. Designing your contracts, frontend and backend with multichain support in mind makes expansion easier. Keep chain configuration in one place, avoid hardcoding addresses and give users clear network labels.

Proud Globe itself accepts payments on several EVM networks from one configuration file, and every pin can link to an app on any chain. If you are launching a dApp, a pin on the globe is a simple way to give early users another place to find your official link.