A company needs to procure third-party software to run in its AWS environment. Which AWS service or marketplace should it use to purchase that software?

AWS Marketplace is the correct choice because it is a curated digital catalog where customers can find, buy, and deploy third-party software, data, and services that run on AWS. It simplifies the procurement process by offering a wide range of solutions from independent software vendors (ISVs). AWS Resource Access Manager (RAM) allows you to share AWS resources with other AWS accounts or within your AWS Organization, not purchase software. AWS Managed Services (AMS) helps operate your AWS infrastructure but doesn't facilitate software procurement. AWS License Manager helps manage existing software licenses from vendors like Microsoft and Oracle, but it's not a marketplace for purchasing new software.