Hyperledger Fabric vs Hyperledger Besu vs Corda

Fabric, Besu and Corda differ in who can see what by default, so the privacy design is a core architecture decision rather than a feature to add later. In Hyperledger Fabric, transactions follow an execute, order, validate flow, and visibility is set by channels, which partition a network into separate ledgers shared only among member organizations. Within a channel, private data collections keep sensitive values off the shared ledger while still recording a hash on it, so the design you must verify is which organizations belong to each channel, which peers hold which collections, and whether endorsement policies match the parties who should see the data. Confirm these settings with a test network before production, because a channel membership error is hard to unwind once data has been committed. Besu takes a different path. Its private network privacy relied on Tessera private transactions, but the maintainers have announced the sunsetting of Tessera privacy, and Besu 25.6.0 removed the feature along with onchain permissioning. Visibility on a current Besu network therefore depends on local permissioning: node permissioning restricts which peers can connect, and account permissioning governs onboarding and which actions accounts may take, both configured in permissions files on each node. Because these files are local, the reader must design a process to keep them consistent across participants and must verify that no unintended node can peer with the network. Any previous Tessera-based design needs a documented migration plan, and the reader should check it against the Besu release notes for the version they plan to run. Corda uses neither channels nor a global ledger. Its flow framework moves data point to point between the participants of a transaction, and its notary infrastructure checks the uniqueness and sequencing of transactions without broadcasting their contents to the whole network. The practical questions are which parties each flow includes, which notary service the business accepts, and whether the CorDapp limits what each node stores. Corda 4 and Corda 5 use different architectures, so confirm which line supports the privacy controls you need before committing.

A Hyperledger Fabric network starts with identity and ordering decisions that are hard to change later. Each organization needs a Fabric CA, which can either register identities against an LDAP user registry or issue enrollment certificates directly, and the CA also handles renewal and revocation. Ordering is the next decision: Fabric documentation recommends Raft, which keeps working while a majority of orderer nodes are available, so a five node cluster tolerates the loss of two nodes. Byzantine fault tolerant ordering is available only in the 3.x line, so confirm early whether you need it. Channel design, chaincode lifecycle approvals and private data collections then determine who sees what, and each organization must agree on those definitions before the first transaction. Confirm the Fabric version, since v3.0 removed Kafka ordering and the v1.x lifecycle, and migration must be complete before upgrading.

A Besu private network is smaller in component count but still needs deliberate configuration. You choose a proof of authority protocol, and the Besu consensus documentation recommends QBFT for enterprise use over IBFT 2.0, while Clique is no longer supported. Each node carries a permissions configuration file that governs node permissioning and account permissioning, and that file must be distributed and kept in step across the network. Plan the JDK: Besu 26.6.0 requires JDK 25 to build and run, so your build pipeline and hosts must match. Because Besu releases roughly monthly, and the 26.10.0 release notes say an upgraded Bonsai database cannot be opened by older versions, take a backup before each upgrade and test the rollback path in a non-production environment. Tessera privacy is gone, so confirm how private transactions will be handled before you commit to the design.

A Corda build is mostly application and governance work. Corda smart contracts and flows are written as CorDapps in Java or other JVM languages, so the team needs JVM engineering skills and a test process for contracts and flows. Notary setup is a design decision in its own right, because the notary validates uniqueness and sequencing of transactions for each network. The first and second Corda architectures are split across two repositories: Corda 4 comes from the corda/corda repository, with release-os-4.14.3 as the latest open source tag, while Corda 5 comes from corda-runtime-os and is developed and maintained by R3. Choose the line before you design the CorDapps, because the two are not drop-in replacements. DeployOpen scopes implementation fixed-price in writing and does not publish prices, so ask each partner for a written scope covering identity, ordering or notary setup, application development, testing and handover, and state which Corda or Fabric version the quote assumes.

Before you shortlist any of these platforms, read the owning project's own pages. For Hyperledger Fabric, start with the LF Decentralized Trust project page for Fabric, then the Fabric documentation on what Fabric is and the ordering service. Confirm which release line you would run in production, since the Fabric docs describe v2.5 as the long-term support release while v3.x adds BFT ordering. For Besu, the LF Decentralized Trust project page for Besu and the Besu documentation are the reference points, and the Besu releases page is where removals and upgrade notes appear first.

For Corda, the corda/corda repository documents the first architecture covering Corda 1 through 4, while the Corda 5 runtime repository holds the second architecture. Because the two lines differ in what they are and who maintains them, confirm with R3 and the repository README which line matches your requirements before you compare features. Check the Corda tags page for the latest open source tags rather than relying on older articles.

Treat release numbers, license terms and feature availability in this comparison as a starting point. Verify each one against the project page, the release notes and the repository on the day you make a decision, and record the version and date you checked in your evaluation file. Ask your implementation partner and any vendor you engage to confirm the same facts in writing, especially for features that were removed or changed between releases, such as Besu's Tessera privacy and Fabric's Kafka orderer.