Upon receipt of the signed CLAs, the distributor notifies Microsoft, through an online utility, that the agreement has been signed (without being amended). After that date, the OEM has the right to begin purchasing Microsoft Embedded runtime licenses from an authorized Microsoft Embedded distributor. The OEM also has access to the Microsoft ™ Mobile Communications Extranet (ECE), where the OEM can access and download software updates, forms, and announcements about Microsoft Embedded products. Windows 10 IoT Core is no longer supported in the Semi-Annual Chain (SAC). For more information, see the IoT Core SAC Modern Lifecycle Policy. Windows 10 IoT Core commercialization licenses are available through IoT Core Services with Long Term Servicing Channel (LTSC) support in accordance with the IoT Core Services Modern Lifecycle policy. .