"As social become more and more core to the way we think, it's so crucial that we have a strong, experienced leader at the helm of our team. We're thrilled to welcome Iyana as our newest Mistress," said Eley. "Her work has been awarded by Cannes and Clio but more importantly changed the way consumers think about some of the world's most iconic brands."

Smith began her creative career as a copywriter at TBWA\Tequila, with a focus on digital advertising. She then moved to TBWA\Chiat\Day, where she worked on Nissan, Infiniti, Sony and Energizer. While at M&C Saatchi, she has contributed to award-winning campaigns for the San Diego Zoo and Epson.

"It's an incredibly exciting time to be stepping into this role," notes Smith. "We're living through a really interesting moment right now. We're in the middle of an election cycle unlike any other. The world is changing. And advertising is changing. A lot of people see a future that's full of challenges, but I also see it as full of opportunity. I'm looking forward to being at the forefront of that charge as ECD, and working alongside a passionate and talented team that's committed to taking M&C Saatchi to the next level."

"I know that his enormous intellect and instincts make him a valued partner to clients and an inspiration to all who work with him," said David Sable, global CEO of Y&R. "He knows how to bring the best out of people and his innovative mindset always anticipates what we need to do to meet the challenges our clients will face in the future. He is focused, fearless and passionate."

In addition, Sable launched a new global Healthcare practice and named Howard Courtemanche as president. Courtemanche joined Y&R several months ago, after serving as CEO of JWT's Health practice.

Lastly, JJ Schmuckler, who has served as director of business development in North America, was promoted to global chief marketing officer, based out of New York. He succeeds Alex Hughes, who has moved to Washington, D.C., to lead Y&R's U.S. Census account. Schmuckler began his career at Wunderman in account management. He moved to Y&R, where he was chief of staff, and then to VML, where he led global integration efforts.

"Lachlan has a proven, global track record of doing groundbreaking work and inspiring teams on all sides of the business," said Marcus Fischer, president of Carmichael Lynch. "He is an exciting addition to our leadership team, and we're thrilled to have him bring his depth and breadth of experience to Carmichael Lynch."

Pittsburgh-based marketing communications shop Gatesman+Dave, has promoted Shannon Baker to the role of president.

In her new role, Baker is tasked with driving agency integration, collaboration and innovation for the agency’s diverse client roster which includes Del Monte, Hormel Foods, Foodland, UPMC Health System, and the Pittsburgh Penguins hockey franchise among others. 

Baker joined the agency in 2007 and is credited with reeling in several million in new business income  and with landing major accounts such as Thorntons convenience stores, StarKist and Tobi Dynavox. Previously she was EVP and head of the agency's PR and social media units.