This kind of middleware has the potential to be as significant as relational databases. Did you ever use one of those "xml data mapping" tools in your integrat

This kind of middleware has the potential to be as significant as relational databases. Did you ever use one of those "xml data mapping" tools in your integrations? If so, how would you compare their strengths and weaknesses with your solution? This comparison could be compelling for enterprise customers (though your early customers will be the less risk-averse, more technical startups/small companies).