> ## Documentation Index
> Fetch the complete documentation index at: https://nayax-44d6e37b-fis-cortina.mintlify.site/llms.txt
> Use this file to discover all available pages before exploring further.

# Integration Lifecycle

> Phases of the FisCortina onboarding process, from kickoff to production launch.

Every FisCortina integration follows a structured onboarding process, managed by a Nayax Integration Engineer, through these steps:

<Steps>
  <Step title="Kickoff Call">
    Your Nayax Integration Engineer shares environment URLs, the API Reference guide, and this integration guide. Your Integration Engineer shares security keys separately.
  </Step>

  <Step title="Sandbox Setup">
    Nayax configures your integrator entity in the sandbox environment. Development and testing begin once setup is complete.
  </Step>

  <Step title="Development">
    Build your integration against the sandbox environment. Implement [StartSession](/docs/fis-cortina/authentication), [Register](/docs/fis-cortina/register), and [Void](/docs/fis-cortina/void) endpoints.
  </Step>

  <Step title="Certification">
    Submit acceptance test results to your Integration Engineer for review. Nayax provisions the production environment upon approval.
  </Step>

  <Step title="Pilot">
    Limited deployment on a small number of devices for a defined period. The Nayax Pilot Manager monitors activity. Nayax resolves any issues before full rollout.
  </Step>

  <Step title="Production Launch">
    Full production deployment. The Nayax Operational and Payment Operations teams handle ongoing support.
  </Step>
</Steps>

## Next steps

<CardGroup cols={1}>
  <Card title="Authentication" href="/docs/fis-cortina/authentication">
    Implement the StartSession challenge-response before sending fiscal requests.
  </Card>
</CardGroup>