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IIS Application Pools

I just moved over a few websites to a new server. When I set them up IIS 7 created an application pool for each website.
What is better :  To have one application pool for each website (10 websites low maintenance) or to use the "Default Application Pool" for all 10 sites?
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2 Solutions
Brad GrouxCommented:
You want an application pool for every website. Microsoft IIS best practice is Single Web Application + Single Application Pool + host-based site collection model.
AleksAuthor Commented:
That sounds good. What is the reason for this ?
AleksAuthor Commented:
and what do you mean by "host-based site collection model. "
Dan McFaddenSystems EngineerCommented:
"Host-based site collections" or "Host-named site collections (HNSC)" is primarily a methodology of managing complexity in SharePoint environments.  It has to do with creating, organizing and managing sites, URLs, DNS Names and AppPools when deploying web apps with SP services.

1. http://technet.microsoft.com/en-us/library/cc424952(v=office.15).aspx
2. http://blogs.msdn.com/b/kaevans/archive/2012/03/27/what-every-sharepoint-admin-needs-to-know-about-host-named-site-collections.aspx
3. http://www.wictorwilen.se/clearing-up-the-confusion-with-host-named-site-collections-and-path-based-site-collections

Unless you are using SP, I would go with 1 website/webapp per AppPool.  Multiple unique, unrelated and custom sites are better off isolated from each other.  Especially if these websites are for different clients.  You don't CompanyA's website you are hosting to take down CompanyB's website when an AppPool that the sites share, crashes.  Now you have 2 annoyed clients.

AleksAuthor Commented:
Thx !

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