# How to use web services in an AAI context and how to achieve trust delegation among web services?

**URL:** <https://forum.clarin.eu/t/how-to-use-web-services-in-an-aai-context-and-how-to-achieve-trust-delegation-among-web-services/416>\
**Category:** Service Provider Federation\
**Created:** [20 August 2024 10:44 UTC](https://forum.clarin.eu/t/how-to-use-web-services-in-an-aai-context-and-how-to-achieve-trust-delegation-among-web-services/416 "2024-08-20T10:44:59Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![alekoe](https://dub1.discourse-cdn.com/flex013/user_avatar/forum.clarin.eu/alekoe/32/4_2.png) [@alekoe](https://forum.clarin.eu/u/alekoe)\
**Post date:** [20 August 2024 10:44 UTC](https://forum.clarin.eu/t/how-to-use-web-services-in-an-aai-context-and-how-to-achieve-trust-delegation-among-web-services/416/1 "2024-08-20T10:44:59Z")

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This is clearly not a trivial problem. Several solutions are considered and evaluated, in close cooperation with the Dutch e-science grid project [BigGrid](http://www.biggrid.nl/)

Some relevant reports:

- User delegation part 1 (research) - [development report as PDF](http://www.clarin.eu/system/files/WSSecurityAndDelegationReport.pdf) (July 28, 2011)
- User delegation part 2 (implementation) - [report as PDF](http://www.clarin.eu/system/files/biggrid-delegation-status-A004.pdf) (December 23, 2011)

Older report about the usage of SLCS in a pilot project:

- SLCS pilot - [report as PDF](http://www.clarin.eu/node/3213) (April 20, 2010)