Amidst rapid market changes and increased competition, technological advancements and market liberalisation, controlling is increasingly imposing itself as an absolute necessity - as a new way of thinking, as a new philosophy and a new way of managing the business. By integrating and coordinating managerial functions and utilising numerous tools, controlling is becoming a central pillar of managerial support and guiding hand in strategic corporate steering. Controlling is undoubtedly responsibility of the top management, but controller has an active backstage role. Controller’s duty is to perform all the groundwork, and prepare data driven guidance for the management to use. This business intelligence rendered as transparent highly useful information and a valuable counsel, enables effective implementation of management’s decision, and guides corporate performance. What will be the controlling’s contribution to corporate success, will depend primarily on controller’s expertise, but also on acceptance of controller by the management and other stakeholders. Quality of business information systems employed is not only determinant, but also prerequisite for successful implementation and functioning of controlling in a corporation. By evaluating development of controlling in XY ltd corporation, importance of developing a common image and awareness of controlling in a corporation was stressed. Controlling should be seen as enabler of decision making process, steering company toward strategic goals attainment, and avoiding unnecessary risks and pitfalls.