IT as Hotel California
βWe are programmed to receive.
You can check out any time you like,
you can never leave!'
Your new IT-system will be like Hotel California unless you plan for de-commision in early stages.
This includes a design that make it possible to leave part by part if itβs a huge system. But also transfer of masterdata, transactional data and business rules, not forgetting access rights and other things related to security and privacy.