Are you serious about growing your business through mobile? Do you want to learn about the latest tools, trends, and best practices? Join us at MobileBeat, the premier event for mobile marketing and growth professionals in 2015, on July 13 – 14 in San Francisco.

Two quick facts about smartphone usage in the U.S., according to Flurry Analytics: Across all demographics, smartphones have an 80 percent penetration rate, and smartphone owners spend 177 minutes per day on their phone (more time than they spend watching TV).

The way marketers reach 80 percent of people for 3 hours per day within the U.S. is by spending on paid mobile ads. You could read into it that most of your marketing spend should be in mobile, but there’s more to the story.

To help you winnow out the good advice from the bad, we’ve added even more smart people to our lineup of speakers at MobileBeat 2015. Here are just a few of the amazing people that will be sharing their insights:

Marlene Williamson, CEO, WatermarkMarlene Williamson, CEO, Watermark

VB TRansform 2020: The AI event for business leaders. San Francisco July 15 - 16

Marlene Williamson is the Chief Executive Officer of Watermark. Previously Williamson was Chief Marketing Officer of a number of technology companies, including Alfresco, BigMachines (sold to Oracle), and Hitachi Global Storage Technologies (sold to Western Digital).

Prior to joining Hitachi, Williamson was Vice President of Global Marketing at Ericsson. She has held Vice President of Marketing roles at Symantec, IBM, Polycom, and Acer. Earlier in her career, she led Global Consumer Marketing at Apple.

She has been named Marketer of the Year by the American Marketing Association, Partner of the Year by Yahoo, Innovator of the Year by Google, Outstanding Female Executive in Silicon Valley by the YWCA, a Woman of Influence in Silicon Valley by the San Jose Business Journal and a 2013 Woman Who Has Made Her Mark by Watermark. She is a former board member of Watermark, the CMO Council, and the Association for Corporate Growth.

Watermark is a nonprofit organization that supports a community of executive women who have risen to the top of their fields — coming together to connect, develop and advocate for the advancement of women in the workforce.

Scott Jampol, SVP Marketing, OpenTableScott Jampol, Senior VP of Marketing, OpenTable

Scott Jampol joined OpenTable in 2008. During his tenure, OpenTable has grown its network from 10,000 restaurant customers to more than 32,000 and from seating 3 million diners each month to seating more than 15 million per month. In addition to helping diners discover and book the perfect restaurant table and helping restaurants grow their businesses, Jampol oversees marketing efforts behind OpenTable mobile apps and mobile payments.

Prior to OpenTable, Jampol cofounded and served as Vice President of Marketing for Hark.com, a startup company that distributes multimedia clips online and via mobile devices. He also spent five years at Yahoo, where he held several key roles, including marketing director for Yahoo! Travel. In this role, he helped drive website visitors to book air, car, hotel and travel packages. Among his accomplishments, Jampol helped grow Yahoo’s user-generated review submissions and nurture a robust online travel community.

Rob Singer, chief marketing officer, Ancestry.comRob Singer, Chief Marketing Officer, Ancestry.com

Singer has served as Chief Marketing Officer of Ancestry.com since March 2014. He joined the company in November 2010 as Global Vice President of Customer Relationship Management and most recently served as Senior Vice President of US Marketing. Prior to joining Ancestry.com, Singer was the Senior Vice President of Customer Relationship Management at Bank of the West from February 2009 to November 2010. From July 2005 to February 2009, he was the head of Customer Intelligence and Relationship Marketing at StubHub. Prior to joining StubHub, he held senior-level database marketing and business intelligence positions at Yates Advertising, YellowBrick Solutions, Charles Schwab & Co., Inc., and KnowledgeBase Marketing.

At Ancestry.com, he started a number of initiatives to serve customers, including the company’s Customer Satisfaction, Net Promoter Score, and Voice of the Customer programs.

D. John Jackson, VP, Innovation and Customer Identity, FedExJohn Jackson, VP of Innovation & Customer Identity, FedEx

D. John Jackson serves as VP of Global Customer Services Strategy, Planning, Engineering, Innovation & Customer Identity at FedEx. His role entails implementing corporate strategies that focus on customer satisfaction and leveraging technological breakthroughs occurring in the marketplace to improve customer experience.

Jackson has been awarded five FedEx Five Star Awards — the Corporation’s most prestigious recognition for superior performance. In addition, the natural language understanding call-steering system he helped implement at FedEx won a Gold Stevie Award (given for sales and customer service) in 2012.