I think it is crucial for Bluemix success that for each service there will be SDK + working sample + tutorial for the main programming languages (at least Java, Node.js and PHP).
For example I needed to connect from Node.js to the Object Storage service. There is just a link to OpenStack SDKs and API and it was not too helpful. It took me several days until I succeed to make it work and it was difficult. It should not be like that.
REST API description is not enough.
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