Online forms can be used for every aspect of your business from Order processing to HR. Depending on your requirements there are a plethora of choices. Some of the top choices and a comparison can be seen here https://www.g2.com/products/cognito-forms/competitors/alternatives.
If the offering includes workflow and online analysis and customisation you can move from the need for a desktop or on premises solution to a pure cloud based solution.
Some considerations need to be given to GDPR to ensure you are compliant with the current legislation. You will also need to consider how you limit the attachments or uploads that users can attach to the forms to avoid considerable storage costs.
For workflow you could also review the 60 products in this listing https://www.softwareadvice.com/ie/forms-automation/