_VIEWSTATE and performance issues


Viewstate represents the state of the page when it was last processed on the server. ViewState is used to track and restore the state values of controls that would otherwise be lost, either because those values do not post with the form or because they are not in the page html.
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Building an SSO platform in PHP

For public applications OAuth and OpenID are useful solutions, both of which are presented with code samples in the presentation. For enterprise applications, SAML is a useful standard. The presentation covers building an Identity Provider for your company and shows how to integrate with that identity provider from your applications.