CSOM vs JSOM vs SSOM vs REST

Sharepoint 2013

Model Types:

• CSOM Client-side object model. C# (or Visual Basic) only
• JSOM JavaScript object model. JavaScript only.
  • SP.ClientContext.get_current() for normal use. new SP.ClientContext('url...') for specific SPSite. Note this works cross-SPSite in 2013.
• SSOM Server-side object model.
• REST REST web technologies and standard Open Data Protocol (OData) syntax.
  • Either JS (JavaScript) or C# (or Visual Basic)

Technologies table:

	CSOM	JSOM	SSOM	REST JS	REST C#
JavaScript
C#
From browser
From server
OAuth2
S2S

Hosting table:

	CSOM	JSOM	SSOM	REST JS	REST C#
SharePoint hosted
Autohosted
Provider hosted
Sandboxed solution			(Limited)
Farm solution