SharePoint 2013 Minimal download SharePoint:AjaxDelta

SharePoint 2013 Minimal Download Strategy (MSD) new feature introduced by Microsoft that improving end user experience. I recently check the master page and find some interesting tags that used most at the top of the placeholders.i'e SharePoint:AjaxDelta Tag.




SharePoint:AjaxDelta wrapping all our favorite Delegate Controls and other elements in the Master Page. What this AjaxDelta control does is to only download to the client (browser) what has been changed since the previous download. If nothing has changed, nothing is downloaded Ajax Style.

Following are the AjaxDelta control that are available in the Master page.
  1. DeltaPlaceHolderAdditionalPageHead
  2. DeltaSPWebPartManager
  3. DeltaSuiteLinks
  4. DeltaSuiteBarRight
  5. DeltaSPNavigation
  6. DeltaWebPartAdderUpdatePanelContainer
  7. DeltaWebPartAdderUpdatePanelContainer
  8. DeltaTopNavigation
  9. DeltaSearch
  10. DeltaPlaceHolderPageTitleInTitleArea
  11. DeltaPlaceHolderPageDescription
  12. DeltaPlaceHolderLeftNavBar
  13. DeltaPlaceHolderMain
  14. DeltaFormDigest
  15. DeltaPlaceHolderUtilityContent
when you click on any of the page you will see the start.aspx page  and following by # then your site page URL. example http://xxx/_layouts/15/start.aspx#/SitePages/Home.aspx. The start.aspx page is responsible render the Delta changes control.





The Minimal Download Strategy is by default enabled on Team sites, Community sites but MDS is not enabled on publishing sites. MDS is a web feature.

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