A variant of the Initial Capabilities Document (ICD) that implements the Information Technology (IT) Box Model to provide IS programs greater flexibility to incorporate evolving technologies and achieve faster responses from requirement validation processes than is typical for other kinds of materiel and non-materiel solutions. IS- ICDs are used to document capability requirements and associated gaps where the intended solution involves research, development, and acquisition of applications system software, and the projected software development costs exceed $15 million. IS-ICDs with life cycle costs less than $15 million may be submitted for review and validation if validated requirements are needed to support budgetary requests or other purposes. IS-ICDs are not appropriate for software embedded as a subset of a capability solution developed under other validated capability requirement documents.