COTS products are non-developmental items
that already exist and can be readily procured. Most often
designers are keen to use COTS items (if suitable) because they are invariably cheaper and
less risky than developmental items. The suitability of commercial off
the shelf items is often assessed early in
the design through the use of an appropriate prototype of
the system or subsystem. While there are considerable advantages to
using COTS items, the systems
engineering effort must ensure that the requirements for reliability, maintainability,
robustness, and so on, are being met.
Other topics in our resources on Systems Engineering related to COTS include: