What is one benefit of using a custom workflow step over a standalone bot for...

Custom workflow steps expose application functionality as reusable building blocks that authorized users can incorporate directly into workflows through Workflow Builder. This provides a significant usability advantage for straightforward automation because end users can compose business processes visually rather than learning bot commands or interacting with a separate conversational interface. Slack allows developers to build custom steps and control who is permitted to add those steps to workflows, while administrators can impose additional restrictions. Custom steps do not eliminate app configuration or OAuth permission requirements, and they are not exclusive to Enterprise Grid environments. Their principal value is composability: application functionality becomes available alongside Slack-built and connector steps within the workflow-building experience. Therefore, B correctly identifies the architectural and user-experience advantage of using a custom workflow step for suitable automations.