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Part IV: Advanced Programming Techniques > Add-Ins
Chapter 22. Add-Ins
Add-ins are a useful feature in Excel, considered by many Excel developers to be an indispensable tool when distributing their custom projects to a wider audience. Anyone can create an add-in — it's the kind of thing that's easy to do once you know how. This lesson discusses the concept of add-ins and how to incorporate them into your Excel projects.
NOTE
This lesson discusses standard Excel add-ins. Two other types of add-ins exist that are not developed with VBA and are not discussed in this lesson. One of the other types is called COM add-ins, developed with languages such as Visual Basic, C++, and J++ that support Component Object Model components. The other type is DLL add-ins, which are Windows files known as Dynamic Link Library files.
