What is the simplest way to pass data between playbooks?

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The simplest way to pass data between playbooks is through artifacts. Artifacts are representations of pieces of information that are created during the execution of a playbook, and they can be easily shared between different playbooks. This approach allows for efficient data transfer without the need for complex configurations or additional storage mechanisms.

When a playbook creates an artifact, it provides a structured way of encapsulating relevant data that can be utilized by other playbooks, ensuring consistency and reliability in the information exchanged. This process enhances the automation capabilities within Splunk SOAR by facilitating seamless communication across various playbooks handling different aspects of security or incident response.

In contrast, actions results are specific outputs from actions taken within a single playbook and are not inherently designed for inter-playbook communication. The file system may involve more complicated handling for data storage and retrieval, which is generally not as straightforward or efficient as using artifacts. KV Store, while useful for storing and managing key-value data within Splunk, is typically utilized for more persistent storage needs rather than simple data communication between playbooks. Thus, artifacts stand out as the most effective and user-friendly method for this purpose.