Pre-rendered 3D graphics
Real Time 3D graphics
3D Graphics come in two basic forms. Pre-rendered 3D graphic and Real Time 3D graphic. Both ways the creation requires modeling, texturing, and perhaps animation.
Pre-rendered 3D graphic are delivered as images or videos wich can be used everywhere very easily.
Suitable applications are architectural visualisations, product presentation websites, video tutorials, educational clips, visual FX in movies, etc.
Real Time 3D graphics are interactive experiences like e.g. a car racing video game. It takes special skills and experience to create well running 3D objects for the output device (smartphone, desktop computers). The way how this 3D objects behave or can be manipulated is managed by a Game Engine (Unity, Unreal, etc.). This requires some coding (C#). Augmented Reality solutions (for smartphones) are also possible.
Good applications for 3D Real Time graphics are interactive presentations of e.g. products, machines or buildings, interactive tutorials or educational explorations, also simulators, configurators, etc.
Due to smartphone-operating-system-updates mobile apps need maintenance work to run properly over the years.