The volume of available multilingual data has exploded. One option is to create machine translation systems based on the previously translated segments, with as much data as possible. This works in many cases, but it is well known in the market that the cleaner the data, the better the results in terms of productivity, cost, and even quality. tauyou <language> has made an additional step in the process by optimizing the translation engines on a per-document basis, which has proven to provide a significant quality increase in the machine translation output. This approach, linked to a joint source content optimization and summarization, leads to significant savings in multilingual communications.