The Mars Terraformer Transfer (MATT) is the first practical terraformation plan. It is patent-pending in the U.S., available for licensing by the Lake Matthew Team...
Many details of the mission plan are under licensing NDA, but it can be said that one commercial satellite executes the entire mission plan. This satellite - a Shepherd - accompanies a designated celestial small body beyond Mars orbit. It restructures the body and deflects it along a specific, unobvious flight path for impact at an optimal target site on Mars. Impact prepares the site for life in 2036...
In time, settlement industries will vent excess oxygen into the crater, forming a protective local ozone layer. Ozone, heat and the pressure of air and water set the stage for a photosynthetic archipelago on the open crater floor - a true terraformation site, with appearance similar to the masthead site, Alaska's Aniakchak caldera.