The phrase "obvious benefits" means that the advantages or good things about something are easy to see or understand without needing much explanation or thought. Full definition
There is the most obvious benefit of not having to take the medical exam or subject yourself to the drawing of bodily fluids. (ljmlifeinsurance.com)
Reducing bullying and theft The most obvious benefit of using such systems is the removal of the need for students to bring cash into schools. (educationbusinessuk.net)
The more traditional D - mode is suited to more relaxed driving, around town - with obvious benefits in terms of fuel consumption. (newsroom.nissan-europe.com)