Any comments on how Agile relates to PDSG?

Agile over the wire and how to make it work.

In our experience, pure-play Agile development is destined to fail in a global delivery model. The basics of Agile, such as the emphasis on face-to-face communication, close interaction between teams and an adaptive approach to product development, are not possible while engaging an offshore team. However, by injecting process adaptations, Cognizant has successfully enabled some facet of "specially customized" Agile methodologies. In fact, a large percentage of Cognizant's software product innovation services use Agile practices in some form or the other.

Cognizant is a leader in product engineering capability, and one of the reasons for its success is the strong integration of processes in its delivery methodologies. Today, product requirements are evolving and there is huge pressure to meet deadlines, budget and user expectations. Many clients want to develop prototypes for products and start development before requirements are completely finalized. To meet such requirements, we extract the relevant principles of Agile processes and inject them into a global delivery model. Some clients already have some form of Agile process or "mindset" in place when they engage with Cognizant, which facilitates adoption of these customized Agile frameworks into their environment.

http://www.agilejournal.com/content/view/50/99/

Agile software development refers to a group of software development methodologies based on iterative development, where requirements and solutions evolve through collaboration between self-organizing cross-functional teams. The term was coined in the year 2001 when the Agile Manifesto was formulated.

Agile methods generally promote a disciplined project management process that encourages frequent inspection and adaptation, a leadership philosophy that encourages teamwork, self-organization and accountability, a set of engineering best practices that allow for rapid delivery of high-quality software, and a business approach that aligns development with customer needs and company goals. Conceptual foundations of this framework are found in modern approaches to operations management and analysis, such as lean manufacturing, soft systems methodology, speech act theory (network of conversations approach), and Six Sigma

http://en.wikipedia.org/wiki/Agile_methodology