Will it be possible to build the Core System over a Workflow?
It will be possible if it is with a Workflow of nowadays. Though it is controversial that how far a Workflow should be functional, the Non-programing technology of today is really amazing. Especially in a department or company of up to 500 people, employees who know the reality of day-to-day operations should "build it by themselves". I dare to say that you surely can get a better one than "made-to-order system of 10 million yen budget".
The following Workflow definition is "Bill Creation flow (including reporting the Order and reporting the Service provided)" for 'Questetra, Inc.', a Japanese SaaS business company.
- 72 Data items.
- One of them is Table type (length variable).
- Has a mechanism to send an email which business data have been inserted in the middle of the process.
- Has a mechanism for the automatic PDF document generation.
- Has a mechanism for the automatic starting monthly Billing flow.
- Has a mechanism for the automatic approval when passing the deadline.
- Has a mechanism for the automatic starting triggered by 'an email from an external'
- Has a mechanism of labor saving of input by indicating prospect according to input user or input time.
If you would build this by made-to-order, maybe it will cost '2 people working a whole month on only the requirements definition'. And later, it will cost 'never less than 10 people working a whole month on designing, development and testing'.
[Bill Creation flow]