You can download Microsoft Office 2021 LTSC Professional Plus from the official Microsoft website or purchase it from an authorized retailer. Here is a direct link to Microsoft Office 2021: https://www.microsoft.com/en-us/software-download
By choosing Microsoft Office 2021 LTSC Professional Plus, organizations can enjoy a reliable and feature-rich productivity suite that meets their business needs. With its predictable and stable environment, this version is ideal for businesses and institutions seeking a low-risk, long-term solution. microsoft office 2021 ltsc professional plus 16 link
To help you decide if you even need Office 2021 LTSC, here is a comparison: You can download Microsoft Office 2021 LTSC Professional