The customer need that indicates that you should propose Aruba Mobility Master as part of an Aruba controller-based solution is the need for always-on wireless connectivity with no downtime [12. Aruba Mobility Master (MM) is a network management system that provides centralized control over wireless LAN controllers (WLCs) and access points (APs)[11][13]. It enables high availability features such as hitless failover, seamless roaming, load balancing, etc.[11][14].

A characteristic that could make a Virtual Mobility Controller (VMC), as opposed to a hardware controller, a good solution for a customer is need for flexibility in moves and changes3. VMC is a software-based controller that runs on x86 virtualized servers3. VMC provides more flexibility than hardware controllers because it can be easily deployed, moved, or scaled up or down according to changing network demands3.

Some possible points to explain about Aruba CX switches are:
Aruba CX switches have a large feature set that covers all aspects of data center networking, such as high performance, scalability, security, automation, analytics, and cloud integration12. They also exceed Cisco switches in some areas, such as programmability, agility, and cloud-native micro-services architecture3.
Aruba CX switches integrate with HPE compute solutions as well as other vendors' solutions through open standards and APIs1. They also provide a consistent operating system across all switch models and form factors, simplifying management and operations2.
Aruba CX switches have a simple licensing model that does not require customers to unlock more features by adding specialized licenses1. They also offer flexible consumption models that allow customers to pay as they grow or consume technology as a service3.
https://blog.router-switch.com/2021/08/buyer-guide-cisco-switches-vs-aruba-switches/

The Aruba Experience Edge Platform comprises the Aruba infrastructure, software, and partnerships that work together to improve user network experiences by providing automated network management, edge-to-cloud security, and predictive AI-powered insights12.

According to Aruba's website1, Aruba AIOps is a solution that uses artificial intelligence and analytics to identify exact root causes of network issues, auto-remediate problems, proactively monitor user experience, tune the network to prevent issues before they occur, and optimize and secure the network using peer benchmarking and prescriptive recommendations2. It is built into Aruba Central, a cloud service that manages networking equipment that runs ArubaOS services3.
One reason that Aruba AIOps is more powerful than many competing solutions is that Aruba has extensive data stores on which to draw, based on tens of thousands of customers over multiple years4. This enables Aruba AIOps to leverage a large amount of anonymized data from diverse network environments and use machine learning algorithms to provide accurate and actionable insights for network operations5.