1. DSRA -Relative Web technology clarification in Technology Architecture
Huawei Contribution
Yang Sun,
Li Feng,

2. Content
Terms Description
REST Usage in DSRA

3. DSRA TODO
Below extract from DSRA-ToDo_Overview_clean.pdf and DSRA_plan_ xlsx in London DSRA Workshop workshop

4. Terms Description SOAP
SOAP: A type of protocol that is lightweight, simple, extendible and XML-based. It is designed to exchange structured information at web.SOAP supports many protocol like HTTP、SMTP and MIME etc, SOAP can be used as RPC across many platform、program and language. SOAP is more mature in security、multiple platform integration. SOAP’s efficiency is not so good compare with REST.
DSRA can use SOAP to integrate with different Partner existing information system and then transform it into REST when deliver it to ender user, partner.

5. Terms Description JSON
JSON (JavaScript Object Notation) is a lightweight data-interchange format. It is easy for humans to read and write. It is easy for machines to parse and generate. It is based on a subset of the JavaScript Programming Language , Standard ECMA-262 3rd Edition - December 1999 . JSON is a text format that is completely language independent but uses conventions that are familiar to programmers of the C-family of languages, including C, C++, C#, Java, JavaScript, Perl, Python, and many others. These properties make JSON an ideal data-interchange language.
DSRA can use JSON for resource model and exchange format, it is easy for manipulating and presentation using java, PHP， HTML/Javascript， JSON will reduce the information exchange overhead.

6. Terms Description WS-*
WS-* is a series protocols for web services which include basic protocol like UDDI, WSDL and SOAP, also include extend protocol like WS-Security, WS-Policy, WS-Event, WS-BPEL WS-Transaction etc to support more complex business scenarios.
WS-* is popular in enterprise computing environment, but not fit for light weight internet style resource constrained environment.

7. REST is recommended as API style in DSRA Advantage for using REST
REST Usage in DSRA
REST is recommended as API style in DSRA
Advantage for using REST
REST API can reduce transmission overhead which fit for the mobile network/app, thus save the battery life
Using standard HTTP operator like PUT, POST, GET, DELETE etc make developer more easy to get familiar with DS API.
Easy transformation. Using API Broker, or API Orchestration, SOPA, WS-* interface can be easily transformed to REST API .(using XSLT or scripting)