Question: Where is the headquarters for the company for which Gary Kovacs served as CEO?

Context paragraphs:
Gary Kovacs: Gary Kovacs (born 1963 or 1964) is a San Francisco Bay Area technologist.  He was the Chief Executive Officer of AVG Technologies.  Kovacs has worked for Mozilla Corporation, Adobe, SAP, and IBM, and led Zi Corporation, a mobile text messaging company.

Magnus Hall: Magnus Hall (born 1959) is a Swedish business executive and the current CEO of Vattenfall; he has served as the company's CEO since October 2014.  Prior to this, he served from 2004-2014 as CEO of Holmen.  From 2001-2004 he was CEO of Holmen's paper products division; he began his career with Holmen Paper in 1987, after a two-year stint at Holmens Bruk.  He graduated from the Linköping Institute of Technology and Georgetown University (on the Fulbright Scholarship).

Al DiGuido: Alexander "Al" DiGuido (born June 27, 1956) is an innovator in the direct response industry and in e-mail marketing methods.  As of December, 2011, he is the former CEO of direct marketing company Zeta Interactive.  Prior to his position with Zeta, DiGuido was the CEO of Epsilon Interactive, another direct marketing company, DiGuido also served as CEO of Bigfoot Interactive, CEO of Expression Engines, EVP at Ziff Davis, and publisher of Computer Shopper, where he launched ComputerShopper.com, a direct-to-consumer e-commerce engine.  Prior to Ziff Davis, he was VP/advertising director for Sports Inc.  DiGuido also serves on the Direct Marketing Association's Ethics Policy Committee.

Archie's Family Restaurants: Archie's Family Restaurants was a short-lived American restaurant chain based on the characters by Archie Comics.  The facades showed Jughead Jones eating a hamburger.  Around 1972, Archie Comics' parent company, Archie Enterprises, Inc., decided it wanted to further diversify into food service operations.  Barbara and Gary Kovacs, sole owners of the recently founded BarKo Group, Inc., became interested in the venture and bought stock in the Archie companies.  Consequently, BarKo received the contract to develop the restaurants.

Gary C. Butler: Gary C. Butler was the CEO and president of Automatic Data Processing.  He held this position from August 2006 through November 2011, and had been with the company for 37 years.  From 1990 to 1995, he served as Group President for ADP’s Dealer Services Group; and from 1995 to 1998 he served in the same capacity for ADP’s Employer Services Group.  Prior to assuming his role as CEO in 2006, Butler was President and Chief Operating Officer of the company.

AVG Technologies: AVG Technologies is a security software company headquartered in Amsterdam, Netherlands, that was founded in 1991 by Jan Gritzbach and Tomáš Hofer.  Since 2016 the company has been a subsidiary of Avast Software.  The company developed antivirus software and internet security services such as AVG AntiVirus and has corporate offices in Europe, Israel, Brazil, Canada and the United States.

Key Safety Systems: Key Safety Systems (KSS) is a company that develops and manufactures automotive safety systems.  The safety systems are installed in hundreds of vehicle models.  The company headquarters is in Sterling Heights, Michigan, in the United States.  Globally, the company has 13,000 employees who work in 32 plants and technical centers worldwide.  The company's 2016 annual revenue was $1.8 billion.  The current KSS CEO and president is Jason Luo.  He has held the positions of president, member of the board, and CEO, since March 2007.  Luo has taken the offer as CEO of Ford China.  The new job allows Luo, a Chinese-born engineer who has lived in the United States for three decades, to return to Shanghai to be near his aging parents.

Edgar Bronfman Jr.: Edgar Miles Bronfman Jr. (born May 16, 1955) is an American businessman who currently serves as a Managing Partner at Accretive LLC, a private equity firm focused on creating and investing in technology companies.  He previously served as CEO of Warner Music Group from 2004 to 2011 and as Chairman of Warner Music Group from 2011 to 2012.  In May 2011, the sale of WMG was announced; Bronfman would continue as CEO in the transaction.  In August 2011, he became Chairman of the company as Stephen Cooper became CEO.  Bronfman previously served as CEO of Seagram and vice-chairman of Vivendi Universal.  Bronfman Jr. expanded and later divested ownership of the Seagram Company, and also worked as a Broadway and film producer, and songwriter under the pseudonyms Junior Miles and Sam Roman.

Corporate headquarters: Corporate headquarters is the part of a corporate structure that deals with important tasks such as strategic planning, corporate communications, taxes, law, marketing, finance, human resources, and information technology.  Corporate headquarters takes responsibility for the overall success of the corporation and ensures corporate governance.  It is sometimes referred to as the head office, which is the location where the executives of a business work and where many of the key business decisions are made.  Generally, corporate headquarters acts as a core when the business is operating.  The corporate headquarters includes: the CEO (chief executive officer) as a key person and their support staff such as the CEO office and other CEO related functions; the "corporate policy making" functions: Include all corporate functions necessary to steer the firm by defining and establishing corporate policies; the corporate services: Activities that combine or consolidate certain enterprise-wide needed support services, provided based on specialized knowledge, best practices, and technology to serve internal (and sometimes external) customers and business partners; the interface: Reporting line and bi-directional link between corporate headquarters and business units.  Most other divisions and branches report to the corporate headquarters and staff may visit there periodically for training or other instructions" (Kimberly: 2014: 22).  The corporate services are often relocated into a separate legal entity called shared services center.  Research shows that the city in which a company is headquartered has a significant influence on the company's activities, including its business practices and its corporate philanthropic giving.

Keith Nellesen: Keith Nellesen (born 1967) is an American entrepreneur and the co-founder of Vivint, Inc., a home automation, security and solar energy company.  Vivint, Inc. was acquired in late 2012 for $2.2 Billion by the Blackstone Group.  Following the sale of Vivint to the Blackstone Group, Nellesen became the founder of NUVI where he is currently the CEO.  Nellesen has been a part of NUVI since its founding and previously served as the CEO of the company from May 2014 to October 2015, before recently resuming the CEO position in late 2016.  He also previously served as Chairman and CEO at MoneyReef.

Supporting paragraphs: Gary Kovacs AVG Technologies
Answer: Amsterdam, Netherlands