- A team reuses its own components. This may be a business decision, since the team may want to control a component critical to the project.
* External reuse - A team may choose to license a third-party component. Licensing a third-party component typically costs the team 1 to 20 percent of what it would cost to develop internally. The team must also consider the time it takes to find, learn and integrate the component.

Concerning form or structure of reuse, code can be:
* Referenced - The client code contains a reference to