For the deployment of the GARR Federated Cloud Computing Platform, we chose an intent-based approach, which relies on declarative modeling for specifying the requirements of the service provisioning, describing the parts that compose the system, any specific constraint requirements and the supplier/consumer relations between them. An automated orchestration tool analyzes the model, generates a sequence of executable steps needed to perform the deployment, and coordinates the execution of those steps. The approach has been used in three kinds of deployments: the cloud platform itself, a container platform and Deployment as a Service.
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