#TOSCA Simple Profile in #YAML v1.2 approved as a Committee Specification

OASIS is pleased to announce that TOSCA Simple Profile in YAML v1.2 from the OASIS Topology and Orchestration Specification for Cloud Applications (TOSCA) TC [1] has been approved as an OASIS Committee Specification.

YAML is a human-friendly data serialization standard with a syntax much easier to read and edit than XML. The TOSCA Simple Profile in YAML specifies a rendering of TOSCA which aims to provide a more accessible syntax as well as a more concise and incremental expressiveness of the TOSCA DSL (Domain Specific Language) in order to minimize the learning curve and speed the adoption of the use of TOSCA to portably describe cloud applications.

This Committee Specification is an OASIS deliverable, completed and approved by the TC and fully ready for testing and implementation.

The prose specifications and related files are available here:

TOSCA Simple Profile in YAML Version 1.2
Committee Specification 01
19 July 2018

Editable source:


PDF (Authoritative):

Distribution ZIP file

For your convenience, OASIS provides a complete package of the prose specification and related files in a ZIP distribution file. You can download the ZIP file here:


Members of the TOSCA TC [1] approved this specification by Special Majority Vote. The specification had been released for public review as required by the TC Process [2]. The vote to approve as a Committee Specification passed [3] and the document is now available online in the OASIS Library as referenced above.

Our congratulations to the TC on achieving this milestone and our thanks to the reviewers who provided feedback on the specification drafts to help improve the quality of the work.

========== Additional references:

[1] OASIS Topology and Orchestration Specification for Cloud Applications (TOSCA) TC

[2] Public review:
* 30-day public review, 19 January 2018:
- Comment resolution log:

[3] Approval ballot:

Associated TC: 
Topology and Orchestration Specification for Cloud Applications (TOSCA)