Open Web Interface for .NET

<h2 id="owin-as-middleware">OWIN as middleware</h2>
<p>In addition to decoupling Web frameworks and Web servers, OWIN allows chaining together <a href="/facts/Middleware/HobNosz9">middleware</a> into a pipeline. A Web framework can interact with OWIN without knowing whether it is interacting directly with the underlying web server, or with one or more layers of middleware (each implementing OWIN) on top of the Web server.<a class="footnote-ref" id="fnref:7" href="#fn:7"><sup>7</sup></a> 
</p><p>This allows infrastructure concerns, such as <a href="/facts/Authentication/64y4S69b">authentication</a>, to be split out into separate modules. This is desirable as it decouples them from the application's own code, and makes them reusable across applications. In Project Katana, Microsoft has made into OWIN modules several ASP.NET features that were previously part of the core ASP.NET framework.<a class="footnote-ref" id="fnref:8" href="#fn:8"><sup>8</sup></a> This allows them to be reused in other Web frameworks, and also ensures a cleaner separation from the application using them.
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<h2 id="see-also">See also</h2>
<ul><li><a href="/facts/ASP.NET_Core/t93JjWxg">ASP.NET Core</a></li>
<li><a href="/facts/HTTP_handler/B0BYbxeG">HTTP handler</a></li></ul>

<h2 id="external-links">External links</h2>
<ul><li><a href="http://owin.org/">Official OWIN website</a></li>
<li><a href="https://github.com/aspnet/AspNetKatana/">Katana Project</a> at <a href="/facts/GitHub/n1hNCsc3">GitHub</a></li>
<li><a href="https://www.asp.net/aspnet/overview/owin-and-katana/an-overview-of-project-katana">Microsoft's overview of Project Katana</a></li></ul>

<h2 id="references">References</h2>

<ol>
<li id="fn:1"><p>Chonkar, Swapnal. "Open Web Interface For .NET (OWIN)". www.c-sharpcorner.com. Retrieved 2024-12-04. <a href="https://www.c-sharpcorner.com/UploadFile/swapnal/open-web-interface-owin-for-net/" target="_blank">https://www.c-sharpcorner.com/UploadFile/swapnal/open-web-interface-owin-for-net/</a> <a href="#fnref:1" class="footnote-back-ref">↩</a></p></li>
<li id="fn:2"><p>ardalis (2024-12-02). "Open Web Interface for .NET (OWIN) with ASP.NET Core". learn.microsoft.com. Retrieved 2024-12-04. <a href="https://learn.microsoft.com/en-us/aspnet/core/fundamentals/owin?view=aspnetcore-9.0" target="_blank">https://learn.microsoft.com/en-us/aspnet/core/fundamentals/owin?view=aspnetcore-9.0</a> <a href="#fnref:2" class="footnote-back-ref">↩</a></p></li>
<li id="fn:3"><p>Chonkar, Swapnal. "Open Web Interface For .NET (OWIN)". www.c-sharpcorner.com. Retrieved 2024-12-04. <a href="https://www.c-sharpcorner.com/UploadFile/swapnal/open-web-interface-owin-for-net/" target="_blank">https://www.c-sharpcorner.com/UploadFile/swapnal/open-web-interface-owin-for-net/</a> <a href="#fnref:3" class="footnote-back-ref">↩</a></p></li>
<li id="fn:4"><p>ardalis (2024-12-02). "Open Web Interface for .NET (OWIN) with ASP.NET Core". learn.microsoft.com. Retrieved 2024-12-04. <a href="https://learn.microsoft.com/en-us/aspnet/core/fundamentals/owin?view=aspnetcore-9.0" target="_blank">https://learn.microsoft.com/en-us/aspnet/core/fundamentals/owin?view=aspnetcore-9.0</a> <a href="#fnref:4" class="footnote-back-ref">↩</a></p></li>
<li id="fn:5"><p>Freeman, Adam (2014-09-16). Expert ASP.NET Web API 2 for MVC Developers. Apress. ISBN 978-1-4842-0085-8. <a href="978-1-4842-0085-8" target="_blank">978-1-4842-0085-8</a> <a href="#fnref:5" class="footnote-back-ref">↩</a></p></li>
<li id="fn:6"><p>Zamora, Jodi. OWIN for IT Students. North Charleston, SC, USA: CreateSpace Independent Publishing Platform. ISBN 978-1-5330-4532-4. <a href="978-1-5330-4532-4" target="_blank">978-1-5330-4532-4</a> <a href="#fnref:6" class="footnote-back-ref">↩</a></p></li>
<li id="fn:7"><p>Praburaj (2022-09-30). "OWIN Middleware in the IIS integrated pipeline". learn.microsoft.com. Retrieved 2024-12-04. <a href="https://learn.microsoft.com/en-us/aspnet/aspnet/overview/owin-and-katana/owin-middleware-in-the-iis-integrated-pipeline" target="_blank">https://learn.microsoft.com/en-us/aspnet/aspnet/overview/owin-and-katana/owin-middleware-in-the-iis-integrated-pipeline</a> <a href="#fnref:7" class="footnote-back-ref">↩</a></p></li>
<li id="fn:8"><p>howarddierking (2023-06-15). "An Overview of Project Katana". learn.microsoft.com. Retrieved 2024-12-04. <a href="https://learn.microsoft.com/en-us/aspnet/aspnet/overview/owin-and-katana/an-overview-of-project-katana" target="_blank">https://learn.microsoft.com/en-us/aspnet/aspnet/overview/owin-and-katana/an-overview-of-project-katana</a> <a href="#fnref:8" class="footnote-back-ref">↩</a></p></li>
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Open Web Interface for .NET open-in-new

Open Web Interface for .NET