Enterprises globally are undergoing business transformation. Organizations and corporate world have been searching for ways to enhance their businesses in order to be agile and how development in Information Technology (IT) can help them achieve this in today's unstable economic climate. Large-scale changes in the business affect operations, which in turn impact business systems. Changes in the underlying technology infrastructure are often needed to enable business transformation. The paper carried out shows that architecture is the key to managing complexity and scale of change in the business.