FAST PROJECT DEVELOPMENT
ColdFusion allows programmers to focus on high-level issues and program a lot faster meaning that costs go down as well.
ColdFusion is rather easy to learn as well and that helps.
GREAT COMPATIBILITY WITH JAVA
You can do stuff that you usually do with Java but faster and easier. ColdFusion can also call Java classes and you can easily make use of existing Java Code.
INTEGRATE WITH OTHER PLATFORMS
ColdFusion integrates surprisingly well with other platforms, not to mention with Macromedia products as you can quickly insert code into Dreamweaver files.
ColdFusion also works well on Windows, Unix, Linux or Mac and can create and consume databases of all types.
ELIMINATES THE NEED FOR A TEST SERVER
ColdFusion comes with a whole application that helps you test the code you write and that acts as a test server. Of course, if you want you can use ColdFusion with Apache or IIS also.
BETTER AT SCALING SYSTEMS
ColdFusion is very scalable and can handle a heavy load. System scalability is a matter of application tuning, database tuning & putting the appropriate caching systems in place. ColdFusion helps a lot in building massive web projects.