To: All EmployeesFrom: Bob SauerbergRe: Executive AnnouncementAfter a wonderful 20-year career at Condé Nast, Sarah Chubb has decided it’s time to explore other opportunities. As we all know, there is a huge amount of energy and excitement in the digital world right now-and Sarah is interested in pursuing the next phase of her career.Sarah has been a transformational force at Condé Nast and the media business as a whole. I am sure you will all join me in thanking Sarah for her many valuable contributions, congratulating her on her success and wishing her the best of luck as she moves ahead. Sarah asked me to share her thoughts with you: “CN is the premier company in the industry and I have truly loved my job here. I am also tremendously proud of the contributions that my team and I have made to the Company. While the challenges of an exciting new world beckon me, I know that CN is set up exceptionally well for the future.”In the coming weeks, we will name a successor to continue the outstanding work in digital growth and innovation. Condé Nast Digital head Sarah Chubb will leave the company on Feb. 18 “to explore new opportunities,” the company announced internally yesterday. A successor will be named in the coming weeks. As part of a major restructuring of its digital division last fall, Condé Nast fused the Condé Nast Digital sales and marketing team with the Condé Nast Media Group, allowing magazine brands to handle ads sales for their Web sites directly (Condé Nast Digital continued to oversee non-magazine branded sites-including Ars Technica, Concierge, Epicurious and Reddit). Chubb, a 20-year Condé Nast vet, also advocated for a homegrown platform for Condé Nast’s iPad and other tablet members but the publisher instead opted to work with Adobe, which was the preference of Condé Nast director of digital development Scott Dadich, according to All Things D.A memo from Conde Nast president Robert Sauerberg outlined the move to employees yesterday.