It solves two tasks: comfortable, straight display of complex tabular information, which, on the first side allows faster response to the information shown on the screen, on the other hand, it is straightly comparing the data, so, it also receives extra quality control decisions based on the data. And yet, as these are interactive charts, it allows to execute easy, comfortable and fast navigation inside Salesforce, guaranteeing higher efficiency, high simplicity and more comfort compared to lightning.
As for the client - it means, that same operations of transferring charts to different types inside the system are done faster, the work time is being saved and the general opinion about Salesforce also becomes better.