Question: What was the former position of the man who worked for an Atlanta-based provider of enterprise mobility management (EMM) software and standalone management systems for content, applications and email?

Context paragraphs:
Globo plc: Globo Plc provides enterprise mobility management (EMM) and mobile application development (MADP) software and services.

42Gears Mobility Systems: 42Gears Mobility Systems is an Indian software company providing Enterprise Mobility Management (EMM) solution.

Visage Mobile: Visage Mobile is a software-as-a-service (SaaS) company that provides mobility management solutions for enterprises.  Their product, MobilityCentral, is intended to simplify enterprise mobility management, as a web-based application.

AppTec: AppTec GmbH is a privately held company providing Enterprise Mobility Management software managing applications, configuration, and security of smartphones and tablets.  AppTec has its headquarters in Basel, Switzerland.  The company also has offices in London and Freiburg.  AppTec is used by over 3,800 companies worldwide.

AirWatch: VMware AirWatch is an Atlanta-based provider of enterprise mobility management (EMM) software and standalone management systems for content, applications and email.

Enterprise mobility management: Enterprise Mobility Management (EMM) is the set of people, processes and technology focused on managing mobile devices, wireless networks, and other mobile computing services in a business context.  As more workers have bought smartphone and tablet computing devices and have sought support for using these devices in the workplace, EMM has become increasingly significant.

Verivo: Verivo Software Inc. is an enterprise mobility software company, with headquarters in Waltham, Massachusetts.  Verivo’s enterprise mobility platforms allow users to develop, secure and govern mobile applications across multiple devices.

Amtel: Amtel, Inc. is a telecommunications management company based in Santa Clara, California providing cloud based mobile device security and expense management solutions.  The company’s primary focus is on providing integrated enterprise mobility management secure messaging and telecom expense management (TEM) and [Secure messaging] software as a service for enterprises.  Amtel’s SaaS solution for managing smart mobile devices allows organizations to manage mobile device security, mobile apps and fixed telecom services from a single Web based console.

John Marshall (entrepreneur): John D. Marshall is an American entrepreneur and inventor.  He is the co-founder and former president and CEO of AirWatch, which VMware acquired for $1.54 billion in 2014.  He currently serves as senior vice president and general manager at AirWatch by VMware, which surpassed $200 million in 2014 bookings and 15,000 customers as of December 31, 2014.

MobileIron: MobileIron Inc. is an American software company specializing in solutions for mobile device management (MDM) and enterprise mobility management (EMM).

Supporting paragraphs: John Marshall (entrepreneur) AirWatch
Answer: president and CEO