A class is just a reusable definition of a data structure. The SyncToAnalyticsService example is not really a data structure at all, it's just a function. It's

A class is just a reusable definition of a data structure. The SyncToAnalyticsService example is not really a data structure at all, it's just a function. It's a verb, not a noun. But it's made into a class just because OOP and patterns. This feels like someone tried to write Java in Ruby.