> ## 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.

# Polygon CDK Overview

> Deploy your own custom blockchain with built-in Agglayer interoperability. Enterprise-grade rollup infrastructure for payments, compliance, and dedicated chain rails.

<Frame>
  <img src="https://mintcdn.com/polygon-labs/neKXk5towK-oBDip/img/cdk/agglayer-enterprisecdk.png?fit=max&auto=format&n=neKXk5towK-oBDip&q=85&s=6689da7aa8635044883476b2bffb071a" alt="Polygon CDK" width="2400" height="1260" data-path="img/cdk/agglayer-enterprisecdk.png" />
</Frame>

Polygon Chain Development Kit (CDK) lets institutions deploy their own custom blockchain on production-ready rollup infrastructure. Every CDK chain connects to **Agglayer** by default, so cross-chain interoperability and unified liquidity are built into the infrastructure from day one — not a separate integration.

CDK provides enterprise-grade blockspace with predictable costs, privacy options, performance under load, and uptime guarantees, purpose-built for institutions that need compliance controls without sacrificing connectivity.

## Key capabilities

<CardGroup cols={2}>
  <Card title="Built-in Agglayer interoperability" icon="arrow-right-arrow-left">
    Every CDK chain connects to Agglayer by default. Cross-chain asset transfers and unified liquidity are native features — no additional bridging infrastructure required.
  </Card>

  <Card title="High performance" icon="bolt">
    20,000+ TPS when optimized for payment workloads. 100+ Mgas/s throughput. Managed uptime SLA with lower maintenance complexity compared to Hyperledger Besu setups.
  </Card>

  <Card title="Granular network control" icon="sliders">
    Deploy as fully private or with gated access and offchain data. API keys and access control lists let you filter read/write permissions and specific contract or RPC method calls.
  </Card>

  <Card title="Zero-downtime migration" icon="rotate">
    Migration pathways for chains running Besu, preserving full data history without business disruption.
  </Card>
</CardGroup>

## Operating modes

| Mode          | Description                                                                                                                                               |
| ------------- | --------------------------------------------------------------------------------------------------------------------------------------------------------- |
| **Sovereign** | Agglayer connectivity secured by pessimistic proofs. No prover required. Default configuration.                                                           |
| **Validium**  | ZK-secured execution with offchain data availability. Available today via OP Succinct AltDA; see [Privacy Configuration](/chain-development/cdk/privacy). |
| **zkRollup**  | Fully onchain zero-knowledge rollup for maximum security and Ethereum-aligned trust.                                                                      |

## Get started

<CardGroup cols={2}>
  <Card title="Start with CDK docs" icon="book" href="/chain-development/cdk/get-started/overview">
    Review the architecture, execution stacks, and rollup modes before planning a deployment.
  </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>

## Resources

<CardGroup cols={2}>
  <Card title="What is CDK?" icon="book" href="/chain-development/cdk/get-started/overview">
    Architecture, execution stacks, and technical capabilities.
  </Card>

  <Card title="Why choose CDK?" icon="star" href="/chain-development/cdk/get-started/benefits">
    Key benefits and why enterprises choose CDK over alternatives.
  </Card>

  <Card title="FAQs" icon="circle-question" href="/chain-development/cdk/additional-resources/faqs">
    Frequently asked questions from developers and infrastructure providers.
  </Card>

  <Card title="Product page" icon="arrow-up-right-from-square" href="https://www.agglayer.dev/cdk-enterprise">
    Polygon CDK product overview on agglayer.dev.
  </Card>
</CardGroup>