I know its open ended question but I researched a lot to figure out the solution for the same but I didn't find the any concrete solution. I am stuck with an issue of sending push notification to Salesforce1 App through customization functionality of Salesforce. On the update of a particular field of Case object which defines the severity of Case created, I want to send the push notification to few related users.

I have gone through the documentation "Salesforce Mobile Push Notifications Implementation Guide" but it seems its more related to sending the push notification to Salesforce1 app from other applications. But I am looking for a solution to send push notification from salesforce.com to Salesforce1 app.

Any help??

Thanks in advance!!