Three storefronts, two marketplaces, one payment processor, no single truth.
A multi-channel e-commerce operation talks to itself in five languages. WooCommerce calls an order "order". PrestaShop calls it "commande". Amazon Seller calls it "orderItemId". Stripe calls it "payment intent". When the customer writes back asking about "my order from last week", the operator has to guess which system holds the truth.
Lemnia T2 sits on a Mac mini or a dedicated NUC on the local network. The desktop client and the iPhone companion both read from it. Five storefronts, one per-product dossier.