As it's name suggests, Viburnum opulus Compactum is a compact variety of viburnum. It's foliage is deciduous and leaves are mid green which turn a slight shade of purple in autumn. In summer tiny, white flowers appear on flat flower heads that cover this plant, these are followed by tiny red berries. 

At a glance:

Deciduous foliage

White flowers appear in summer, followed by berries

Full sun/full shade/partial shade

Well drained fertile soil

Hardy

Will reach a height of 1.5m and a spread of 1.5m over 10-20 years