Markus Darda is the owner of MD Consultancy (Germany) and DaComp GmbH (Switzerland). As a senior Citrix engineer and architect, he works for enterprise customers across Europe to design and implement Citrix (XenApp and XenDesktop) environments. As a Citrix trainer, he teaches all the Citrix products to customers and works for Citrix as a subject matter expert in different courseware and exams.

He has worked for Lanxess, Germany; T-Systems, Germany; Koenen en Co, the Netherlands; and for companies in Switzerland, Sweden, and Norway.

He has worked on different courseware from Citrix.

Ben Piper is a hands-on IT consultant, network and systems engineer, developer, and author specializing in advanced enterprise networking and virtualization technologies, including Cisco, Citrix, Microsoft, RedHat Enterprise Linux, and VMware. He has over 10 years of experience designing and implementing technology and consulting for organizations such as McKesson, the National Science Center, the Department of Veterans Affairs, as well as dozens of hospitals, health care organizations, and small businesses. He has numerous Cisco, Citrix, and Microsoft certifications. He has authored technology content for ExecSense and Corp! Magazine, and his technology advice has been featured on news media outlets, including CNBC, Investor's Business Daily, NASDAQ, and Monster.com. His consulting website, http://benpiper.com, provides a variety of free resources for Citrix, Cisco, Linux, VMware, scripting, coding, and more.

Neil Spellings is an independent virtualization and cloud infrastructure consultant who has been working with Citrix products since the early days of WinFrame and MetaFrame, and he was instrumental in the initial deployments of server-based computing technologies for a number of large financial institutions in the UK and Europe.

He is a Citrix Certified Expert - Virtualization and is certified across numerous other Citrix and Microsoft products to give a balanced view of the virtualization marketplace. He is a recognized subject matter expert by Citrix Education and has contributed questions to numerous XenApp 6, 6.5 CCA, CCAA, and CCEE exams, and he has also helped write the recent XenDesktop 7 Design exam.

He is an active member of the Citrix community in the UK. He usually travels around Europe to both present and attend E2E/PubForum events, such as Synergy; he is one of the founding members of the UK Citrix user group and remains on its steering group. He blogs at http://neil.spellings.net and frequently shares his opinions on Twitter via @neilspellings.

He was awarded the Citrix Technology Professional (CTP) status in 2013 for his contributions to the community.

He is a STEM ambassador and runs a Code Club in a local primary school with the ambition to inspire and encourage children to take up a career in ICT and learn to code.

He lives in Surrey, England with his wife, Ina, and 6-year-old daughter, Zoë.