Part of the trend towards investing in a modular system is single-source responsibility, meaning a source that is selected among others due to specific reasons, e.g. price advantage, quality, support, delivery, etc. Consequently, single-source advantages are realized by a customer when a manufacturer accepts the responsibilities that go with building a modular system. What are the benefits that the customer or end-user realizes when a modular system manufacturer accepts single-source responsibility of a system vs. having the system being ‘stick-built’ at the customer’s facility? In this column, I will discuss seven important advantages of an investment in modular systems.