The main problem was that each service had its own logic and its own variables for predicting the time of the order. Maintaining all the changes and understanding in which service you need to tweak to make it better was a whole problem.
Why is a separate team needed for this?
The company lacked a team focused on a specific and important task - time forecasting. The challenge for such a team was to develop a single platform (a master delivery time forecasting system) and implement a new forecast in all Delivery Club components that work over time.
Since we use the Inner Source approach, it becomes logical that keeping the logic in different services and blurring responsibility for different teams is not very correct.
By creating a new team and delegating this responsibility to it, we reduce the time of development and delivery of features to production.