It's a "job queue" in old-people-words, just managed by someone else. Sometimes they even offer integrations like putting a job on the queue on database trigger

It's a "job queue" in old-people-words, just managed by someone else. Sometimes they even offer integrations like putting a job on the queue on database triggers, or file changes. Nothing really new, except that you don't have to build it yourself ... but if you do and you sell it to your coworkers/clients/customers, you just call it FaaS.