Lighting your scenes starts with your project's requirements and your own decisions about the look and style you are aiming for. Do you want high-quality realism or simpler geometric rendering? Do you want lifelike objects or cartoon-like graphics? Are you lighting an outdoor scene or an indoor one? Just as important, you also need to ask yourself what are the primary target platforms, especially: is it mobile, desktop, or console? At some point in your projects, before creating the final assets and lighting, you need to figure out your lighting strategy, as Unity recommends:
Altering your lighting strategy late in development has a high impact on your workflow. Taking the time to get this right before you enter production saves time overall, and allows you to achieve better performance and higher visual fidelity.
In this section, I'll try to break down the different types of lighting sources and settings you can use...