http://wiki.scn.sap.com/wiki/display/EmTech/Service+Development#ServiceDevelopment-HowtocreateaservicewithSAPGateway

AppsInstallConfigExtensibilityLaunchpadTheme DesignerMobileLearning

You can extend SAP Standard apps without modification. This helps TCO and software life cycle maintenance cost.

Extensibility: Extensibility Guide New:Extensibility of SAP Fiori Apps New:SAP Fiori ToolkitApprove Requests - Workflow scenario integration: How to add custom workflow scenarios How to Guide: SAP Fiori - Adding Custom Workflows in 5 Steps( Note: Launchpage section is old ) New:How to create a custom data provider for Task GatewayOData - NetWeaver Gateway: SAP NetWeaver Gateway Developer Center Developing OData services self learningSAPUI5: UI Development Toolkit for HTML5 Developer CenterCustom App development: New:Create Your Own Fiori Designed Apps with the New SAPUI5 Design Rapid Deployment Solution New:UI5 is now Open Source -->OpenUI5 Building SAP Fiori-like UIs with SAPUI5 New:Building SAP Fiori-like UIs with SAPUI5 in 10 Exercises New:Bringing SAP Fiori Leave Requests to Microsoft Outlook Calendar New:SAP Fiori My Contacts in Microsoft Outlook

Enabling Multi-Origin Capability in Fiori Apps:HOW TO ENABLE MULTI-ORIGIN CAPABILITY IN SAP FIORI APPS