The customer needs advanced customization for specific workflows.

Salesforce Flow provides the flexibility needed for advanced customization of specific workflows within the Salesforce environment. It allows admins and developers to automate complex business processes and create rich, guided user experiences. The tool offers a drag-and-drop interface to design customized workflows, which can handle various actions like data collection, records updates, and complex logic without the need for custom code.

References: https://help.salesforce.com/articleView?id=sf.flow.htm