> For the complete documentation index, see [llms.txt](https://docs.gurunetwork.ai/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.gurunetwork.ai/guru-network/web2-and-off-chain-infrastructure.md).

# Web2 and Off-Chain Infrastructure

<figure><img src="/files/3ePxqagtVo2WA7qTyyC9" alt=""><figcaption></figcaption></figure>

### BBPA Engine REST API

We utilize Camunda Platform 7 as the open-source foundation of Flow Orchestrator Nodes it offers an extensive [REST API](https://docs.camunda.org/rest/camunda-bpm-platform/7.20/)\[9] out of the box. REST API designed to enable BPA(Business Process Automation) integrators to build various front-end applications atop the orchestration system.&#x20;

All the states of the processes instantiated from BBPM process definition items are accessible through these REST APIs hosted on BBPA Engine, allowing for object interactions and state queries. These APIs can be exposed to Web2 applications either directly through the BBPA Engine node or via a Flow Orchestrator proxy that handles all requests from multiple tenants

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