Flat design has been with us for a while now – it has hints of the minimal, a bold use of colour often as not, a clear love of icons and a particular simplicity of style. All of this is of great use for many businesses in terms of their branding. It fits very often with particular brand messages and has great use in responsive sites, for use on phones and tablets because of its clarity and simplicity. As you will see it can also be used in video as a styling all of its own.
It has its particular appeal to many target groups. It is not fussy! But it does need a careful approach. There are things you should not do within it – certain fonts work better – see above.