Customization vs using online

Sometimes we are getting asked – can you change something in your system for us?
When such requests are significant — it is a subject for separate detailed discussion and building individual solutions.
But sometimes such requests are minimal and it is not so obvious whether it is worth doing changes in the system. We always try to persuade the customer not to change the product. Of course, if customer is persistent – we do modify the system for him and provide complete and tested product version. But keep in mind that system is changing constantly – we add new features, do fixes, provide additional functionality. The version that customer has became outdated – we do not provide upgrades to it – just usual support. It’s clear that main system version will continue to evolve and any product fork version gets frozen. However it is up to the customer to decide what is more important.