Lifestyle photography is a kind of photography which mainly aims to capture portrait/people in situations, real-life events or milestones in an artistic manner and the art of the everyday. The primary goal is to tell stories about people's life or to inspire people in different times. Thus, it covers multidisciplinary types of photography together. A lifestyle photographer is not only a portrait or people photographer and loves/enjoys photography as art in everyday life but is believed to be talented in photography that can also do well in other many disciplines of photography at a time such as landscape, street photography, fashion, wedding and even wildlife with one's unique vision to inspire people's life.
References
Lifestyle photography Wikipedia(Text) CC BY-SA