A change in leadership has occurred at a major tech company. John Ternus is now at the helm, succeeding Tim Cook who led the company for 15 years. During Cook's tenure, the company's value increased significantly to $4.6 trillion, largely due to the popularity of the iPhone.

The transition took place on a Tuesday, marking the end of an era under Cook's leadership. John Ternus is now in charge of the iconic tech giant. Further details about the change in leadership and what it may mean for the company's future can be found through additional reporting.