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LSO API SDK Releases

Download convenient packages of entire SDK releases. 

MEF Forum became Mplify Alliance on 24 June 2025.
Mplify # Standards & SDKs were published on or after. 
MEF # Standards & SDKs were published prior.

Releases

New versions of the LSO API SDKs are released approximately every 6 months. There is one SDK per LSO Interface Reference Point (IRP), e.g., LSO Sonata SDK, LSO Cantata SDK, etc.

Since December 2020, each release has been named alphabetically:

Compatibility

Also see the LSO API Compatibility Chart below.

Contents

The SDK release of an IRP contains all artifacts applicable, including:

  • API specifications.
  • API developer guides (available to Mplify, formerly MEF, members only).
  • Release notes.
  • Business requirements and use cases.
  • Product or service specifications and documentation.
  • All relevant additional documentation.
  • Pre-blended API schemas (where applicable).

Packages

MEF SDK repositories and contents of SDK releases are available for everyone on GitHub>.

No GitHub account is required to access the public SDKs.

 

Roadmaps

Also on this page:

LSO API Compatibility

 

Key

A – J Release: see list below

Green Arrow - No Change No Change

Blue Arrow - Minor Change Minor Change: see release notes

Orange Arrow - Major Change Major Change: see release notes

 

LSO Releases

A LSO Aretha: December 2020

B LSO Billie: June 2021

C LSO Celine: January 2022

D LSO Dolly: June 2022

E LSO Ella: January 2023

F LSO Fergie: June 2023

G LSO Grace: December 2023

H LSO Haley: June 2024

I LSO Irene: December 2024

J LSO Janis: June 2025

Compatibility For LSO Business APIs:
LSO Sonata & LSO Cantata

LSO Business API Compatibility Chart with Irene and Janis

*Note: LSO Order API highlighted to reflect its importance in choice of LSO release.​

Compatibility For LSO Operational APIs:
LSO Allegro, LSO Interlude, LSO Legato

LSO Operational API Compatibility Irene to Janis

* Only LSO Legato (not LSO Allegro and LSO Interlude)

Releases

Roadmaps

 

Key

I-K Release: see list below

Green Arrow - No Change No Change

Blue Arrow - Minor Change Minor Change: see release notes

Orange Arrow - Major Change Major Change: see release notes

 

LSO Releases

I LSO Irene: December 2024

J LSO Janis: June 2025

K LSO Kylie: December 2025

 

The detailed LSO Sonata SDK RoadmapLSO Cantata SDK Roadmap, and LSO Legato SDK Roadmap are publicly available on the MEF Wiki.

How do I access the MEF Wiki?

Roadmap for LSO Business APIs:
LSO Sonata & LSO Cantata

LSO Roadmaps LSO Business APIs Irene Janis Kylie

 

Roadmap for LSO Operational APIs:
LSO Allegro, LSO Interlude, LSO Legato

LSO Roadmaps LSO Operational APIs Irene Janis Kylie

* Only LSO Legato (not LSO Allegro and LSO Interlude)

Roadmap for LSO Product Payloads

LSO Product Payloads Irene Janis Kylie

 

Roadmap for LSO Service Payloads

LSO Service Payloads Irene Janis Kylie

 

About Mplify

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