RadAjaxManager Use RadAjaxManager to configure the necessary AJAX settings to specify the AJAX initiators and updated controls. The AJAX initiator performs the AJAX request to update the respectively set controls. You can find how to configure the RadAjaxManager control in the following articles:
RadAjaxPanel The RadAjaxPanel control mimics the behaviour of the asp:UpdatePanel control - All of the controls that prevously triggered postback requests start performing AJAX updates after they are wrapped in a RadAjaxPanel control. Read more about the RadAjaxPanel in the article below.
RadAjaxManagerProxy Similar to the RadAjaxManager control, the RadAjaxManagerProxy is an additional option to configure the necessary AJAX settings at design-time. RadAjaxManagerProxy is widely used in WebUserControl or Master/ContentPage scenarios:
RadAjaxLoadingPanel A RadAjaxLoadingPanel is displayed over or above the updated controls during AJAX updates. Read how to use and configure the RadAjaxLoadingPanel control in the following article.