Whats the difference between service and utility?
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Mainly, Services have been deprecated and no longer exist 😉 Existing services have been rewritten as Utilities. For historical information, see DifferencesBetweenServicesAndUtilities. Originally, a utility was thought of a one-off thing, while a service was something that’s carefully designed into the infrastructure. As an analogy, “mapping”, “sequence” and “file-like object” are generic interfaces in Python, and could be considered somewhat like Zope services, while other things (e.g. frame objects, mmap objects, curses screen objects etc.) are one-off types/classes, similar to Zope utilities.