Watch Eric Evans on DDD Strategies for Moving Away from Legacy Systems

[Maria_skillsmatter]

DDD Strategies for Moving Away from Legacy Systems
Often a team sets out to design a new piece of software using a domain
model. At first they are focused on strategically valuable new
features and modeling sessions clarify the new approach the business
wants to take. Then they get bogged down because the work necessarily
involves other systems. The newly designed part must be integrated
with an external system and this leads to loss of clarity in the
design. Or it must be integrated with a legacy system, compromising
the new model. In response, the team may try to redesign more of the
legacy system, and the scope expands. There are many ways this may
happen, but they lead to the same place. The narrow focus on strategic
value is lost, and the fresh and clear new approach to the problem is
muddied. This talk will describe a few of the ways that the strategic
design patterns of DDD,in particular, Bounded Context, are used to
avoid these problems and make timely delivery of new software of
modest scope but high value that is integrated with existing systems
without being mired in the outdated models of the past.

To watch Eric's talk, please visit http://skillsmatter.com/podcast/java-jee/talk-from-eric-evans/mw-3447