> ## Documentation Index
> Fetch the complete documentation index at: https://docs.polygon.technology/llms.txt
> Use this file to discover all available pages before exploring further.

# Why Choose CDK?

> Key benefits of Polygon CDK, including EVM compatibility, Agglayer integration, rollup modes, and implementation support.

## EVM Compatibility

Chains built with the Polygon Chain Development Kit (CDK) are fully EVM-equivalent. Existing smart contracts can be deployed without modification, and standard Ethereum tooling works without reconfiguration.

## Performance

* 60 to 100+ Mgas/s throughput
* 20,000+ TPS when optimized for payment workloads
* Sub-60-minute finality in zkRollup and validium modes

CDK supports two execution clients: **op-geth** (Geth-based) and **op-reth** (Reth-based), giving operators flexibility in resource usage and performance tuning.

## Rollup Modes

Every CDK chain supports multiple rollup modes:

* **Sovereign**: No ZK prover required. Agglayer enforces security through pessimistic proofs. Default configuration.
* **Validium**: ZK-secured execution with offchain data availability. Lower cost and higher throughput than zkRollup.
* **zkRollup**: Fully onchain ZK rollup. Maximum security and Ethereum-aligned trust assumptions.

Operators select the mode that best balances cost, trust assumptions, and data availability for their use case.

## Agglayer Integration

All CDK chains connect to **Agglayer** by default. Cross-chain interoperability, unified liquidity, and shared state are native features of every enterprise chain, not add-ons that require additional infrastructure.

## Implementation Providers

For production deployments, CDK chains are typically launched with the support of an implementation provider:

* **Conduit** and **Gateway** both support **op-reth** and **op-geth** execution clients.
* Both providers are building open source tooling for CDK deployments.

<CardGroup cols={2}>
  <Card title="Explore CDK FAQs" icon="circle-question" href="/chain-development/cdk/additional-resources/faqs">
    Review common questions about execution clients, Agglayer integration, and deployment paths.
  </Card>

  <Card title="Request managed CDK deployment" icon="envelope" href="https://info.polygon.technology/get-early-access">
    Contact Polygon about a dedicated enterprise chain and managed deployment support.
  </Card>
</CardGroup>