Mesh implies that there are clearly defined join keys on each dataset that allows you do join across domains. E-commerce example: the warehouse team might prod

Mesh implies that there are clearly defined join keys on each dataset that allows you do join across domains. E-commerce example: the warehouse team might produce a batch of datasets, and the web site time as well. A data lake approach would have a single data team owning both sets of datasets. A data mesh would have each team be responsible for maintaining their own, and making sure they’re interoperable (like having a shared order ID concept).