Our solution helps you achieve exactly what you are describing.
Using our connector for Magento you can quickly and easily integrate and connect Magento to a variety of POS, ERP and accounting systems and other channels. For existing Magento sites, once downloaded, our Magento connector starts copying your customer, item, sales and supplier data to the nchannel platform. Simply add additional connectors for the other channel systems you use to begin exchanging data between Magento and any other channel. This is great for multi-channel retail operations..
You can read more about our connector here: http://www.nchannel.com/connect-magento-2/
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