SQL Server Management Studio (SSMS) 18 is a legacy version used to manage SQL infrastructures ranging from SQL Server to Azure SQL Database. While version 18.12.1 is the final release in the 18.x branch, users are often looking for it to maintain compatibility with older systems. 1. Pre-Installation Requirements
The download size was reduced to roughly half that of SSMS 17.
Microsoft has removed direct links to older SSMS versions from their main download pages, but the files are still hosted on their official CDN. — they can bundle malware.