A pattern is a design idea that can be reused and leveraged across the enterprise. They are blueprints that identify components at a design or logical level (for example, a data server or an application server), and show the roles, interactions, and relationships of components at that level.
- Adapted from “Patterns and Bricks are an Architect’s Two Best Friends,” J. Shulman, Gartner, Inc., 5 Jan. 2004: page 1.
The following "Wireless Lan Pattern" is one example of a logical network pattern for NIH:
![Wireless LAN Pattern](https://webarchive.library.unt.edu/eot2008/20090113182629im_/http://enterprisearchitecture.nih.gov/NR/rdonlyres/B4D5E901-ED97-4C52-99BC-459E398514F6/0/WirelessLANPattern.jpg)
Figure 1: Wireless LAN Pattern
Patterns