Thinkcloud (1901664) writes "Through the AWS Marketplace store, users can rent software from IBM, SAP, Microsoft and many other providers, and payments are made in the cloud. The AWS Marketplace is many open source applications for rent on the site." Link to Original Source
It appears that PL/I (and its dialects) is, or will be, the most widely
used higher level language for systems programming.
-- J. Sammet