What is primarily used to manage software updates across all Avaya applications?

The correct answer is Avaya System Manager, which serves as the central management point for Avaya applications and their software updates. It plays a crucial role in providing a streamlined approach to managing the deployment, configuration, and administration of various Avaya products, including updates and patch management.

Avaya System Manager offers a unified interface that allows administrators to efficiently handle software upgrades across different applications, ensuring that all components maintain compatibility and security. This centralized management capability reduces the complexity and potential for errors that can occur when updates are administered individually across multiple environments.

The other options, while they serve important functions within the Avaya architecture, do not primarily focus on the management of software updates across all applications. Avaya Security Manager, for example, is mainly focused on managing security policies and configurations. Avaya Communication Manager is primarily responsible for call processing and telephony features. Avaya Cloud Services encompasses a range of cloud-based solutions but is not specifically dedicated to software update management.