> For the complete Linea documentation index, see [llms.txt](/llms.txt). > Agents can fetch this page as Markdown at [https://docs.linea.build/stack.md](https://docs.linea.build/stack.md). # Overview ## The Linea stack The Linea stack is the collection of protocol components, onchain contracts, and operational capabilities used to deploy and operate Linea networks. The Linea stack provides a shared, extensible foundation that enables operators to run their own Layer 2 or Layer 3 networks while inheriting Linea’s zero-knowledge security guarantees, Ethereum compatibility, and composability with the broader Ethereum DeFi ecosystem. ## Why the Linea stack exists Configurable The Linea stack supports operators who need more control than a Layer 1 network can offer, without sacrificing interoperability, security guarantees, or alignment with the EVM protocols. Whether you are deploying a private network for regulated environments, you favor selective data availability, or are operating a fully public network, the Linea stack gives you the components and operational model to do so. As blockchain adoption grows, many organizations encounter a common set of constraints: - Layer 1 transactions can be expensive and slow - Public networks do not offer sufficient privacy or control - Bespoke infrastructure is costly to build and difficult to maintain - Regulatory, governance, and operational requirements are hard to enforce on open systems - Interoperability between private systems and public blockchains remains fragmented. The Linea stack lets you run an Ethereum-equivalent network tailored to enterprise requirements, using [open source technology](/protocol/reference/repos), while remaining anchored to the same protocol foundations as [Linea Mainnet](/network/overview). The interoperability between Linea and Ethereum allows Linea stack networks to use Ethereum's digital assets and build within the open and modular DeFi ecosystem. ## What the Linea stack provides At a high level, the Linea stack provides: - **Low-cost transactions:** 10× cheaper than Ethereum L1 costs. - **Fast transactions:** Linea's 1s block times support near-instant [soft finality](/network/overview/transaction-finality#soft-finality). - **Trustless Ethereum interoperability:** Access Ethereum's deep liquidity via Linea's trustless rollup architecture. - **An Ethereum-compatible execution environment:** Run an Ethereum-equivalent network. - **Composability:** Leverage a trustless bridge to Ethereum to interact with digital assets and compose with the largest open, modular DeFi ecosystem. - **Flexible deployment models:** Deploy rollup networks with customizations to suit your privacy, compliance, and availability requirements. - **Privacy and data availability controls:** Keep transaction data private as required, while still benefiting from trust-minimized finalization. - **Operational clarity and control:** Clearly defined components, responsibilities, and failure boundaries so operators can reason about risk, uptime, and compliance. - **Interoperability by design:** Enable controlled interaction with other networks and public blockchains through standardized bridge components. ## Who the stack is for The Linea stack serves technical operators and infrastructure teams who: - Need to run and operate their own Linea network - Require privacy, governance, or regulatory controls not available on public networks - Want production-capable infrastructure rather than experimental prototypes - Are responsible for deployment, monitoring, maintenance, and incident response. It assumes familiarity with distributed systems and blockchain infrastructure, but does not require deep protocol expertise. ## Next steps Ready to build? [Reach out](https://forms.gle/eip4XrYhPFDuLtDQ8) to enquire about our rollup-as-a-service or to access our dedicated design team who will configure the stack to your business needs.