Microsoft talked about some of the new features it has put into its Excel Web App in a previous blog post. That included the Excel Interactive Button, a new feature that can be placed inside websites much like Facebook's "like" button and Twitter's web button.
In a new blog post today, Microsoft talked more about this new Excel Interactive Button. You will see this button placed on websites that also have an HTML table of numbers and stats below it. Microsoft states:
When you find an Excel Button, click it and you’ll see the simple HTML table that you were just looking at get transformed into an immersive and interactive Excel experience complete with filters, conditional formatting, sorting, and charts. And of course, you can go from there directly into Excel Web App or download it to your desktop to open it in Excel.
The interactive example in the blog shows a simple HTML table of "America's Best Colleges". Clicking on the Excel Interactive button brings up a much more detailed list, with different options to view the list. You can also view the list in Excel Web Apps or download the list to view offline in your Excel PC application.
Microsoft gives some example code on how websites can put in support for the Excel Interactive Button. It also supports SharePoint and Office 365.
Source: Excel blog | Images via Microsoft