Different areas of your house and yard have vastly different requirements in terms of the light they need. In outside areas, for example, security is an inevitable concern for most people. Indoors, it's a matter of making sure that enough daylight comes into the busiest rooms, and that wherever it's needed, strong task light is available. Carefully planning the sort of light that's required in each area will make your home far more functional and energy efficient.
Security, safety and function should all play a role in the way you choose to design your outdoor lighting.
The biggest concern with indoor lighting is how to balance daylight with functional, decorative artificial light.
If you're serious about lighting in your home, a lighting designer can work with architects or designers to create unique, captivating and functional illumination.