Influence on Product Development
Advantages
-  Many existing elements available for reuse (what)
 
-  Flexible reuse granularity (how)
 
-  Easier porting (where)
 
-  Improve, fix, support
 
Problems
-  Divergent evolution
 
-  Code bloat
 
-  Inadvertently deep dependencies
 
-  Dependency management
 
-  Licensing
 
-  Quality control