Readme cleanup

README.md

@@ -1,80 +1,62 @@
 <img src="https://www.ga4gh.org/gfx/GA-logo-horizontal-tag-RGB.svg" alt="GA4GH Logo" style="width: 100px;"/>
 
-Schemas for the Workflow Execution Service (WES) API
-====================================================
+Workflow Execution Service (WES) API
+====================================
 
 The [Global Alliance for Genomics and Health](http://genomicsandhealth.org/) is an international
 coalition, formed to enable the sharing of genomic and clinical data.
 
 Cloud Work Stream
 -----------------
 
-The [Cloud Work Stream](https://ga4gh/cloud) concentrates on data representation, storage,
-and analysis, including working with platform development partners and
-industry leaders to develop standards that will facilitate
-interoperability.  The Cloud Work Stream is an informal, multi-vendor working group focused on standards for exchanging Docker-based tools and CWL/WDL workflows, execution of Docker-based tools and workflows on clouds, and abstract access to cloud object stores.
+The [Cloud Work Stream](https://ga4gh/cloud) helps the genomics and health communities take full advantage of modern cloud environments.
+Our initial focus is on “bringing the algorithms to the data”, by creating standards for defining, sharing, and executing portable workflows.
+We work with platform development partners and industry leaders to develop standards that will facilitate interoperability.
 
 What is WES?
 ============
 
-The Workflow Execution Schema is a minimal common API describing how a user can submit
-workflow requests to workflow execution systems in standardized ways.
-Workflow execution engines (SevenBridges, FireCloud, etc) can support this API so users can make workflow requests
-programmatically, adding the ability to scale up.  In addition, these workflow services could have (and probably do have)
-UIs that would (possibly) use this API under the hood to facilitate workflow execution requests.
+The Workflow Execution Service API describes a standard programmatic way to run and manage workflows.
+Having this standard API supported by multiple execution engines will let people run
+the same workflow using various execution platforms running on various clouds/environments.
+Key features include:
 
-Having this standard API supported by multiple execution engines will give people options of processing
-the same workflow (CWL or WDL) across different workflow execution platforms running across various clouds/environments.
-As an example use case, one can find a workflow in CWL on [Dockstore.org](http://dockstore.org), use Dockstore to
-generate a JSON parameterization file, and submit this to a GA4GH-compliant
-workflow execution service.
+* ability to request a workflow run using CWL or WDL
+* ability to parameterize that workflow using a JSON schema
+* ability to get information about running workflows
 
-Key features of the current API proposal:
+API Definition
+--------------
 
-* ability to request a workflow run using CWL or WDL (and maybe future formats)
-* ability to parameterize that workflow using a JSON schema (ideally a future version would be in common between CWL and WDL)
-* ability to get information about running workflows, status, errors, output file locations, etc.
+See the human-readable [Reference Documentation](https://ga4gh.github.io/workflow-execution-service-schemas/docs/) 
+and the [OpenAPI description](openapi/workflow_execution_service.swagger.yaml).
 
-Outstanding questions:
-
-* a common JSON parameterization format
-* standardizing terms, job, workflow, steps, tools, etc
-* reference implementation at https://github.com/common-workflow-language/cwltool-service/tree/ga4gh-wes
-* validation service for testing WES implementations' conformance to the spec
-* Including all task_logs in the workflow log request may present a scaling problem when there are 100s-1000s of tasks
-* Providing a state notification callback URL (eg a webhook)
-* Passing through authentication (user role)
-
-How to view
-------------
-
-The file `openapi/workflow_execution_service.swagger.yaml` contains the API description.
-
-Please visit http://ga4gh.github.io/workflow-execution-service-schemas to view this document in Swagger UI.
+Use Cases
+---------
 
+Use cases include:
 
-Building Documents
-------------------
-
-The OpenAPI description is in the `openapi` directory.
+* "Bring your code to the data": a researcher who has built their own custom analysis can submit it to run on a dataset owned by an external organization, instead of having to make a copy of the data
+* Best-practices pipelines: a researcher who maintains their own controlled data environment can find useful workflows in a shared directory (e.g. [Dockstore.org](http://dockstore.org)), and run them over their data
 
+Possible Future Enhancements
+----------------------------
+* common JSON parameterization format that works with CWL and WDL
+* validation service for testing WES implementations' conformance to the spec
+* improved tools for troubleshooting execution failures, especially when there are 100s-1000s of tasks
+* a callback mechanism for monitoring status changes in running workflows (e.g. a webhook)
+* integration with GA4GH data access APIs (e.g. htsget, DOS)
 
 How to contribute changes
 -------------------------
 
-Take cues for now from the [ga4gh/schemas](https://github.com/ga4gh/schemas/blob/master/CONTRIBUTING.rst) document.
-
-We like [HubFlow](https://datasift.github.io/gitflow/) and using pull requests to suggest changes.
-
-Security Considerations
------------------------
-
-If a security issue with any of the above specifications is realised please send an email to [email protected] detailing your concerns.
+See [CONTRIBUTING.md](CONTRIBUTING.md).
+If a security issue is identified with the specification, please send an email to [email protected] detailing your concerns.
 
 License
 -------
 
-See the [LICENSE]
+See the [LICENSE](LICENSE).
 
 More Information
 ----------------