1. Amazon has launched a new Simple Notification Service (SNS) that allows sending of push notifications to mobile devices and integration with other services.
2. SNS allows publishing of messages to "topics" that applications and devices can subscribe to in order to receive notifications. Notifications are sent via mobile push notifications or integration with other services.
3. The first 1,000 notifications per month are free with SNS, and each additional 100,000 notifications costs $2. This makes it an inexpensive solution for sending push notifications, especially for startups and small businesses.