The benefits of Visual Workflow

There are certain benefits of using Visual Workflow. They are as follows:

• It allows you to create an automated business process using clicks not code.
• Visual Workflow does not require coding, and even if you do not know Apex code, you can still develop business processes.
• Using screens, fields, and choices, you can implement complex business processes to make sure that your users are entering data in the right format.
• Through Visual Workflow, you can manipulate data for certain objects that are not available for the Workflow rule or Process Builder. For example, when a "contact role" is created or updated as primary for an opportunity, then create a new task.
• It allows you to auto submit records for approval.
• It allows you to apply assignment rules on leads or cases that are created by API calls. 
• You can post messages on Chatter. For example, if the Opportunity status is changed to Closed-Won, post a message on the Chatter group.
• It allows you to embed the Flow into the Visualforce page, and you can expose it for unauthenticated access using the Force.com site.
• Once you embed your Flow into the Visualforce page, it allows you to use HTML, CSS, JavaScript, and other Visualforce components.
• It can be easily maintained by non-developers.
• Since it is not code, you don't need to write test classes.
• You can make changes directly to your production organization, just like other configuration changes.
• Every time unhandled processes fail or an error occurs in the Flow, the author will get an e-mail from Salesforce with the error details.
• Using the debug log, you can debug your Flow. Visual Workflow also has a built-in debugging tool. To open the debug window, press Ctrl + Shift + M (on PC) or command + shift + M (on Mac).
• It allows you to invoke the Apex class that implements the Process.Plugin interface.