According to the official Avaya documentation for Avaya Aura® Messaging 10.8 SP1, the application must be installed on a server running one of three specific Microsoft Windows Server operating systems. These supported platforms are Windows Server 2012 R2, Windows Server 2016, and Windows Server 2019. Both Standard and Datacenter editions of these 64-bit operating systems are supported. The installation process and system prerequisites are explicitly defined for these environments to ensure stability and full feature compatibility.

A. 2008 Standard Edition: This operating system is outdated and is not listed as a supported platform for Avaya Aura® Messaging 10.8 SP1.

C. MAC operating systems: Avaya Aura® Messaging is a server-side application designed exclusively for the Windows Server environment and does not support any macOS versions for installation.

1. Avaya. (2020, December). Installing and Configuring Avaya Aura® Messaging, Release 10.8, Service Pack 1 (Document No. NN43001-618, Issue 1.0). Avaya Inc.

Reference: Chapter 2: Server requirements, Section: "Operating system", Page 13. This section explicitly lists "Microsoft Windows Server 2012 R2 Standard or Datacenter Edition (64-bit)", "Microsoft Windows Server 2016 Standard or Datacenter Edition (64-bit)", and "Microsoft Windows Server 2019 Standard or Datacenter Edition (64-bit)" as the supported operating systems.

2. Avaya. (2020, December). Release Notes for Avaya Aura® Messaging, Release 10.8, Service Pack 1 (Document No. NN43001-118, Issue 1.0). Avaya Inc.

Reference: Chapter 3: System requirements, Section: "Server requirements", Page 10. This document corroborates the installation guide, stating the same supported Windows Server versions (2012 R2, 2016, and 2019).