Have you ever heard of Office Web Apps? Don’t fret if you are not familiar with it as plenty of users out there didn’t notice its existence as well. The reason is simple: one will usually stumbled upon Office Web Apps only when he or she opens an Office document on OneDrive (formerly known as SkyDrive) directly through web browser.
From today onwards though, the Office Web Apps is now known as the Office Online. The suite is no longer that hidden any more as Microsoft has also made Office.com as the main entrance for Office Online.
Similarly, the individual applications within the suite – Word, Excel, PowerPoint, and OneNote –now no longer have the “Web App” moniker attached to their names. Instead, it has now been replaced by “Online”. However, there are no other additional major changes done to Office Online though apart from a unified template collection for users to utilize on their Office documents.
The access to Office Online continues to be free of charge and all you need to do is to login using your Microsoft account through Office.com.
[Source: Microsoft Office Official Blog]