For 1 month, accompanied by a great feature team, we had a lots of Design thinking workshops with our client and a few users in order to identify with clients, users and their needs. An effective methodology to involve all stakeholders and make use of their expertise. We were even able to conduct interviews directly in store.
This work allowed us to establish the buyer personae matrix as well as the architecture of the journey in order to validate it with the client before writing the first line of code.