Customers buying their Azure services through an Enterprise Agreement or via the MCA-E have long been eligible for a free 12-month Azure Standard Support plan, and Microsoft confirm that this offer will be extended from 1 July, 2023 to 31 December, 2023.
Find the announcement here: https://bit.ly/3JA2cuD, terms of the offer here: https://bit.ly/3CTFrhq, and a useful comparison of all the Azure Support plans here: https://bit.ly/44i3x1h.