ISO/IEC 15444-9:2005 defines, in an extensible manner, syntaxes and methods for the remote interrogation and optional modification of JPEG 2000 codestreams and files in accordance with their definition in the following parts of ISO/IEC 15444:

• ISO/IEC 15444-1 and its definition of a JPEG 2000 codestream and JP2 file format; and
• the JPEG 2000 family of file formats as defined in further parts of ISO/IEC 15444.

In ISO/IEC 15444-9:2005, the defined syntaxes and methods are referred to as the JPEG 2000 Interactive Protocol, "JPIP", and interactive applications using JPIP are referred to as "JPIP systems".