SUMMARYTim Cook’s final day as Apple CEO is set for today, with John Ternus scheduled to take over tomorrow. Cook sent an emotional memo to employees thanking them for their work and praising Apple’s culture, and he posted a farewell message on social media expressing gratitude and excitement for the next chapter.

An anonymous reader quotes a report from 9to5Mac: Today is Tim Cook's last day as Apple CEO, with John Ternus set to take over tomorrow. To mark his last day in the role, Cook penned an emotional memo to Apple employees today. In the memo sent to employees this morning and obtained by 9to5Mac, Cook reflects on his time at Apple and thanks employees for all of their work. He also says he takes "enormous comfort in handing the helm to someone as brilliant and wonderful and capable" as John Ternus. "Few people understand what it takes to build products that change the world the way John does and I could not be more excited for his leadership," Cook writes. "There is something truly special about Apple," writes Cook. "I am most proud of what an annual report could never capture. This place is proof that culture triumphs over everything. We share a belief that what we build matters, and that we have both the opportunity and the responsibility to leave the world better than we found it. That purpose is part of what makes this place extraordinary. Apple helps nurture it, but I believe it lived within each of you long before you arrived here. It is what brought you to this company and what continues to drive the work you do every day."

He continues: "Together, we have created something far greater than any one of us could have imagined or accomplished alone. And that's the secret to our success. We bring out the best in each other. We lift each other up. We have made it possible to leave our 'dent in the universe,' as Steve once described it, because of who we are and what we believe, because of what we value and how we see the world. How fortunate we are. How fortunate I am..."

Cook also thanked the Apple community in a post on social media, writing: "Sending lots of love to the Apple community on my last day as CEO. My title changes tomorrow, but the love I have for the Apple community never will. Thank you for being a constant source of inspiration. My gratitude is endless, and I'm excited for the next chapter!"