When it comes to describing something that has been utilized effectively, "used well", there are various synonyms that can convey the same message. One suitable option is "utilized aptly", which highlights the skillful and appropriate employment of something. Another phrase that captures the same essence is "employed proficiently", emphasizing the high level of competence employed in its usage. Additionally, one could say "deployed effectively", emphasizing the efficient and successful application of the item in question. Alternatives such as "appropriately utilized", "adeptly employed" or "effectively handled" all convey the notion of using something efficiently and skillfully.