I am looking for a solution that gives our BI team AND our Magento system better insights into user behavior and user needs. Actually we use GA for our webshop and something else for our ERP system/online stores.

In terms of big data it would be very helpful to combine such data or even better, have one solution.

But I did not find any good solutions on market where even Magento could 'ask' the system for user specific data to present him best products that fit to the users needs (online and offline stores).

Actually I thought (from a high point of view) every shop has SKUs and users that buy SKUs with some extra parameters. So I expected that I can find tools or extensions that support something like "that might be interesting for you too" on a point of view from the customer and not "other people bought this too". Or a better example would be "you bought this product a year ago, do you need another one, don't you?".

I know there are large shops, that have such data and they use it - and I guess they all invented it by themselves, while I think 90% of such application should be the same on each shop system - so why is there no extension that can do such things?

Or are there such extensions but I can not find them?

E.g. Spryker has such BI system closely implemented to their shopping system and use Mondrian as tool to view the BI data - but I guess you have to develop the shopping part by yourself too.