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Microsoft IIS
Microsoft IIS

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Microsoft IIS vs Undertow: What are the differences?

Developers describe Microsoft IIS as "A web server for Microsoft Windows". Internet Information Services (IIS) for Windows Server is a flexible, secure and manageable Web server for hosting anything on the Web. From media streaming to web applications, IIS's scalable and open architecture is ready to handle the most demanding tasks. On the other hand, Undertow is detailed as "A flexible performant web server written in java". It is a flexible performant web server written in java, providing both blocking and non-blocking API’s based on NIO. It has a composition based architecture that allows you to build a web server by combining small single purpose handlers. The gives you the flexibility to choose between a full Java EE servlet 4.0 container, or a low level non-blocking handler, to anything in between.

Microsoft IIS and Undertow belong to "Web Servers" category of the tech stack.

Microsoft, MIT, and Starbucks are some of the popular companies that use Microsoft IIS, whereas Undertow is used by CurrencyFair, Notify-e, and Kreomi. Microsoft IIS has a broader approval, being mentioned in 1935 company stacks & 2036 developers stacks; compared to Undertow, which is listed in 8 company stacks and 5 developer stacks.

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What is Microsoft IIS?

Internet Information Services (IIS) for Windows Server is a flexible, secure and manageable Web server for hosting anything on the Web. From media streaming to web applications, IIS's scalable and open architecture is ready to handle the most demanding tasks.

What is Undertow?

It is a flexible performant web server written in java, providing both blocking and non-blocking API’s based on NIO. It has a composition based architecture that allows you to build a web server by combining small single purpose handlers. The gives you the flexibility to choose between a full Java EE servlet 4.0 container, or a low level non-blocking handler, to anything in between.
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        What are some alternatives to Microsoft IIS and Undertow?
        Apache Tomcat
        Apache Tomcat powers numerous large-scale, mission-critical web applications across a diverse range of industries and organizations.
        nginx
        nginx [engine x] is an HTTP and reverse proxy server, as well as a mail proxy server, written by Igor Sysoev. According to Netcraft nginx served or proxied 30.46% of the top million busiest sites in Jan 2018.
        SharePoint
        It empowers teamwork with dynamic and productive team sites for every project team, department, and division. Share and manage content, knowledge, and applications to empower teamwork, quickly find information, and seamlessly collaborate across the organization.
        Apache HTTP Server
        The Apache HTTP Server is a powerful and flexible HTTP/1.1 compliant web server. Originally designed as a replacement for the NCSA HTTP Server, it has grown to be the most popular web server on the Internet.
        OpenResty
        OpenResty (aka. ngx_openresty) is a full-fledged web application server by bundling the standard Nginx core, lots of 3rd-party Nginx modules, as well as most of their external dependencies.
        See all alternatives
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        How developers use Microsoft IIS and Undertow
        Avatar of AngeloR
        AngeloR uses Microsoft IISMicrosoft IIS

        This is a legacy system requirement. We have some portions of our website written in PHP. Normally this wouldn't be an issue but at the time they decided to use PHP+Windows they were also trying to use MSSQL databases (All the microsoft influence was due to some azure credits the company received early on). The particular driver they ended up picking forced them into using the mssql_* functions instead of PDO. This meant that the majority of the site used these rather outdated calls and replacing them was a rather large endeavour. So while we migrate some of the PHP backend away to various node.js api systems we are simply sustaining the existing PHP portions.

        Avatar of Performance Assessment Network (PAN)
        Performance Assessment Network (PAN) uses Microsoft IISMicrosoft IIS

        Web server for our 9 web applications and associated web services and external integrations

        Avatar of David Flynn
        David Flynn uses Microsoft IISMicrosoft IIS

        We host our ASP.NET Core APIs on Windows Server 2016 / IIS.

        Avatar of Yue Wang
        Yue Wang uses Microsoft IISMicrosoft IIS

        Web Server. Deployed on Windows 2012 r2.

        Avatar of Proactima Solutions AS
        Proactima Solutions AS uses Microsoft IISMicrosoft IIS

        Our web frontends are running on IIS

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