It appears that MSF is motivated by data showing that people in countries without adequate local health services do not recieve the care they need. MSF attempts to bridge the gap between needing healthcare and actually getting it by operating in those aforementioned environments.
The organization was founded because of the experience of volunteer Red Cross doctors. These doctors wanted to tell others what they had seen and to help bring more aid to those that are suffering.
MSF works in environments where there is not a lot of wealth or health-care avaliability. This forces them to implement solutions that are cost-effective and able to be distributed to massive amounts of people having similar problems. Operating in these conditions has allowed them to see that those in the lowest socioeconomic groups are the ones who typically need care the most.
They generally work in the lowest socio-economic groups, which tend to be the most in need for medicial aid.
MSF is focused on providing aid where aid is needed, thus the name "Doctors without Borders." They don't care what the policital or socioeconomic status is in a region, they'll provide aid no matter what. They're also able to provide their own funding rather than relying upon that of local governments.
It was a new way of addressing disaster in 1971 when it was founded.
“It’s simple really: go where the patients are. It seems obvious, but at the time it was a revolutionary concept because borders got in the way. It’s no coincidence that we called it ‘Médecins Sans Frontières.’”
MSF relies upon what ever technology and infrastructure they can afford to send to a certain area. Becuase they avoid using facilities that the host country has, they are able to establish their own infrastructure in an area. Additionally, certain areas may be greatly helped by some types of medical technology while others aren't. They rely upon doctors being able to make due in difficult environments as well.
Doctors without Borders has facilities in many countries already established for humanitarian aid. For instance, they had been in Haiti since 1991, so their assistance in 2010 was aided by their already established position there. In that case they upped their projects within the country in response to the disaster.
This organization doesn't get involved with legislation in the regions in which they are operating. They instead focus on providing care to those affected by any number of disasters or calamities. This focus shows that they are more concerned about the immediate well-being of their patients than trying to influcence local governments to make policy changes.
The organization is so large and diverse in its portfolio of accomplishments that it is hard to pinpoint through their research precisely how they approach disasters. However, their overall message is that they help where help is needed most and supply quality medical care for the people there. They seem to have a wholistic approach wherein they supply all care post-disaster instead of focusing on the immediate effects of the disaster.