One of Gerstner's first moves was to dismantle IBM's siloed structure. He centralized decision-making to foster a more unified and agile organization. Gerstner also emphasized the need for a cultural shift, moving from a product-centric to a service-centric model. This was a significant organizational change that required buy-in from employees at all levels. Gerstner's ability to communicate a clear vision and align the organization around common goals was crucial in overcoming resistance to change.