Microsoft announce that they will fully retire the 24×7 Problem Resolution Support SA benefit effective 1 February, 2023. Previously, the plan had been to retire the benefit and replace it with as-needed support for customers with SA spend of more than £250,000, but now customers will need a Unified Support contract or pay for supports on a per-incident basis via Microsoft Professional Support.
Find the announcement, and some links to learn more about the different support options, here: https://bit.ly/3EsEc93.