+Fifo, short for First-In, First-Out, is a fundamental [data structure](/wiki/Data_Structure) principle. It dictates that the first element added to a collection will be the first one to be processed or removed, vital for ordered [data streams](/wiki/Data_Stream).
+## See also
+- [Queue](/wiki/Queue)
+- [Lifo](/wiki/Lifo)
+- [Stack](/wiki/Stack)
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