An Office Add-in is a web application hosted in a browser control or iframe running in the context of an Office application. Add-ins can access data in the current document or mail item, and connect to web services and other web-based resources. To develop add-ins, you use web standards-based technologies, such as HTML5, JavaScript, CSS3, XML, and REST APIs.

1. By
Eng Soon Cheah
(@CheahEngSoon)
Microsoft MVP
Windows Development
Microsoft Office Add-ins
development with NAPA

2. • Microsoft Account (outlook.com / hotmail.com/ live.com)
Before We Start ...

3. Go to
https://www.napacloudapp.com
Sign in with
your Microsoft
Account
1
2

4. 3
4
Select Task Pane Add-in
for Office
Name of Your
Project

5. This is a homepage &
Backend, by using HTML5
& Javascript
Click “RUN” ICON
To run Microsoft Add-In
in Microsoft Office
Online
5
You also can download the
source code and run in
your Visual Studio 2013

6. 6
Authorized Microsoft Add-
In run in Microsoft Excel
Online

7. This is your
Microsoft Office
Add-In
Application

8. 7
Select “Edit Excel
Online”

9. 8
10
9
Key In the data
“Microsoft MVP”
Click “Get the data from
Selection” to get the words
“Microsoft MVP” from cells
“N9”
Here with the result,
“Microsoft MVP”

10. • NAPA
https://www.napacloudapp.com
• Office Store
https://store.office.com/appshome.aspx
• Office Dev Center
http://dev.office.com/
• Channel 9
https://channel9.msdn.com/Shows/Office-Dev-Show
References