Australian online sales represent 13% of all retail sales. Even though growth has been very strong over the past five years, we expect online to continue to grow much faster than bricks & mortar. In Issue 1 of The Retail Mosaic, we size the Australian online market by category, compare Australian retailers with US and UK peers and provide a framework for online penetration growth over the next decade. Australian online penetration is likely to reach 21% in the next ten years. This level of growth online means mature retailers will need to eliminate net store openings, invest more in their IT and supply chain and improve their customer data.