Microsoft Office Web Apps are online companions to Microsoft Word, Excel, PowerPoint, and OneNote, enabling people to access and do light editing or sharing of Office documents from virtually anywhere. I had given an overview in my previous post - Office Web Applications. This post is about getting access to the Office Web Apps for your organization and deploying it. Refer to the TechNet links given inline for detailed guidance.
Office Web Apps platform comparison overview article provides a summary comparison of capabilities of Office Web Apps on Windows Live SkyDrive, and of Microsoft SharePoint 2010 Products if they are installed on-premises or on SharePoint Online.
To deploy Office Web Apps in your organization requires one of the following SharePoint versions:
Note: Office Web Apps cannot be installed on SharePoint trial editions or SharePoint Server 2010 for Internet Sites edition.
Office Web Apps is supported in the following browsers:
Note: Also refer to the Known Issues section in Planning Office Web Apps (Installed on SharePoint 2010 Products) article.
Office Web Apps save files in the Office 2010 file formats. If you edit files online from versions of Microsoft Office earlier than 2007 for Windows or 2008 for Mac, Office Web Apps saves a copy of your file in the Office 2010 formats and leaves the original unchanged in your SharePoint 2010 library.
For more information, please refer to following links
The Microsoft Office Web Apps Deployment page provides links to the tools and resources for IT professionals planning to deploy Office Web Apps in a SharePoint environment.
The Deploy Office Web Apps (Installed on SharePoint 2010 Products) article provides details information for IT Pros planning to deploy Office Web Apps on SharePoint 2010 Products on-premises in their organizations. Also refer to the Understanding Office Web Apps (Installed on SharePoint 2010 Products) and Planning Office Web Apps (Installed on SharePoint 2010 Products) articles available on Microsoft TechNet.
Office Web Apps is tightly integrated with SharePoint 2010 Products. When you install Office Web Apps, the Office Web Apps Services are added to the list of SharePoint Services and the Office Web Apps Feature is added to the available SharePoint Features. Office Web Apps services include the Word Viewing Service, PowerPoint Service, and Excel Calculation Services that are created and run within the context of SharePoint Services. For both stand-alone SharePoint servers and SharePoint server farms, deploying Office Web Apps involves three primary phases:
For the above steps in detail and troubleshooting tips, please refer to the Deploy Office Web Apps (Installed on SharePoint 2010 Products) article.
Note: When installing Office Web Apps in a server farm, it must be installed on every server in that farm. However, the Office Web Apps services do not have to be activated on every server in the farm.
Please refer to the Estimate performance and capacity requirements for Office Web Apps (OfficeWebAppsCapacityPlanningDoc.docx) whitepaper available at Microsoft Download Center. In addition to providing performance and capacity planning information, this whitepaper provides detailed testing information performed by Microsoft, as well as additional recommendations and troubleshooting information. Each Office Web App has slightly different performance characteristics, leading to slightly different capacity characteristics to consider when planning a deployment.
Note: If you will be installing Office Web Apps on an existing SharePoint server farm, it is important to plan for, test, and monitor how Office Web Apps will affect other aspects of your SharePoint server performance.
Don't forget about the new 2010 Access web server as well. You can take Access apps and turn them into Sharepoint web sites.
Access Services and Visio Services are not packaged as part of Office Web Apps and are part of SharePoint ECAL. Meanwhile, purchasing a VL edition of Office 2010 (Office Pro Plus 2010 or Office Standard 2010) includes a license for the Office Web Apps.