ISG Tango™

Chuck Walker, ISG Partner and America’s Transaction and Transition Leader, leads the Sourcing Strategy group within the Sourcing Solutions team. Chuck brings more than 25 years’ experience in IT strategy, service delivery, consulting and advisory services including assessments, strategies, transactions, implementations, service management and corporate governance and compliance.

Karen Collyer is a director in ISG’s Digital Practice and works with our clients to optimize their IT operations and transform their organizations to align to business outcomes. She specializes in technology enablement/operational excellence programs that range from app and ERP development to website redesign to UX alignment. The firm also looks to Karen to work with our clients to manage large, multi-deliverable initiatives as well as the day-to-day relationships with a number of our high-profile clients.

Anthony “Ant” Drake is Partner and President of ISG’s EMEA business. Since joining the firm in 2011, he has advised more than 70 clients across Europe on complex technology, sourcing and commercial decisions. From AI readiness to large-scale sourcing and transformation initiatives, he works closely with executive teams at the board and C-suite level to help navigate change, balance growth and cost pressures, and make decisions that shape long-term performance. A respected voice in the industry, Ant is recognized for his ability to shape durable, high-impact relationships between both private and public sector clients and service providers and to translate strategic intent into measurable outcomes. Ant holds a BSc (Hons) in Industrial Economics from the University of Nottingham (2:1).

Dr. Daniel Gerster is a Partner at ISG and offers clients more than 22 years of experience in strategic information management, thereof nine years as global CIO in a professional services company and more than 13 years in management consulting. Daniel helps CIOs and leading IT executives to successfully master digital transformation and to increase core capabilities such as organizational agility or resilience. He has a highly successful track record in CIO advisory. He is a well-known specialist for IT sourcing and contracting and covers commercial, legal and data protection aspects. He is a recognized speaker at conferences for IT executives, on IT events such as Sapphire, DSAG, VOICE, and BME IT Sourcing, VOICE Entscheiderforum.

Prashant Kelker is Partner, Americas Consulting, and Chief Strategy Officer. A globally recognized thought leader in AI and technology-led transformation, Prashant is shaping the firm’s strategic blueprint and bringing together all advisory capabilities to guide clients through the convergence of AI, digital technology and enterprise operating models.

He led the effort to make ISG the first sourcing advisory firm to establish a reference architecture for applied Generative AI with the 2023 ISG State of Applied Generative AI Market Report and played a key role in the development of our highly successful ISG NEXT operating model in 2020. Prashant joined ISG in 2012.

Before joining ISG, Prashant was a Technology Director at Accenture, where he won and established several new accounts and created digital offerings on mobility and predictive analytics. He earned an MBA from the Indian Institute of Management in Bangalore and a BE in Electronics from Bangalore University in India.

Kathy Rudy is Partner and Chief, Data and Analytics, and head of the ISG Data, Analytics and Technology Office. She is responsible for linking all ISG data, analytics and technology capabilities globally to enhance the firm’s data products, develop AI and data-driven consulting assets, and increase our go-to-market effectiveness. She has supported hundreds of client organizations as they leverage data to drive greater efficiency and effectiveness in their IT operations, build measurement programs and support critical sourcing decisions. She was responsible for the development of ISG Inform™, the firm’s next-generation data-as-a-service platform solution, launched in 2019. Prior to joining ISG in 2000, Kathy was a member of the Unisys team that led the City of Chicago’s transition from internally delivered IT services to an outsourced environment. She holds a bachelor’s degree from Michigan State University.

Chuck Walker, ISG Partner and America’s Transaction and Transition Leader, leads the Sourcing Strategy group within the Sourcing Solutions team. Chuck brings more than 25 years’ experience in IT strategy, service delivery, consulting and advisory services including assessments, strategies, transactions, implementations, service management and corporate governance and compliance.