What does "LMA" stand for?

Solution 1:

LMA Services means Logging, Monitoring and Aggregation services and currently includes: Nagios, Prometheus, Alertmanager, Grafana, Graylog and Elasticsearch.

Source: https://ubuntu.com/legal/ubuntu-advantage-service-description

Solution 2:

Maybe we'll let you decide. This link states that it is Logging, Monitoring and Alerting.

https://assets.ubuntu.com/v1/6063f97a-UbuntuAdvantage-datasheet_July-2019.pdf