Invitation to comment on #TOSCA Simple Profile in YAML v1.3 - ends February 11th

OASIS and the OASIS Topology and Orchestration Specification for Cloud Applications (TOSCA) TC [1] are pleased to announce that TOSCA Simple Profile in YAML v1.3 is now a Candidate OASIS Standard and is available for public review and comment.

The TOSCA TC works to enhance the portability and operational management of cloud applications and services across their entire lifecycle.

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

The TC has received 4 Statements of Use from Jheronimus Academy of Data Sciences, Ubicity Corp., XLAB d.o.o., and Tal Liron as an individual [3].

The candidate specification and related files are available here:

TOSCA Simple Profile in YAML Version 1.3
Candidate OASIS Standard 01
24 November 2019

PDF (Authoritative):


Editable source:

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

Public Review Period:

The 60-day public review starts 14 December 2019 at 00:00 UTC and ends 11 February 2020 at 23:59 UTC.

This is an open invitation to comment. OASIS solicts feedback from potential users, developers and others, whether OASIS members or not, for the sake of improving the interoperability and quality of its technical work.

Comments may be submitted to the TC by any person through the use of the OASIS TC Comment Facility as explained in the instructions located via the button labeled "Send A Comment" at the top of the TC public home page, or directly at:

Comments submitted by TC non-members for this work and for other work of this TC are publicly archived and can be viewed at:

All comments submitted to OASIS are subject to the OASIS Feedback License, which ensures that the feedback you provide carries the same obligations at least as the obligations of the TC members. In connection with this public review of “TOSCA Simple Profile in YAML v1.3,” we call your attention to the OASIS IPR Policy [4] applicable especially [5] to the work of this technical committee. All members of the TC should be familiar with this document, which may create obligations regarding the disclosure and availability of a member's patent, copyright, trademark and license rights that read on an approved OASIS specification.

OASIS invites any persons who know of any such claims to disclose these if they may be essential to the implementation of the above specification, so that notice of them may be posted to the notice page for this TC's work.


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

[2] Approval ballot:

[3] Statements of Use:

- Jheronimus Academy of Data Sciences -

- Ubicity Corp. -

- XLAB d.o.o. -

- Tal Liron -


RF on Limited Terms Mode

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