CPLR 306-b provides, in pertinent part, that "[s]ervice of the summons and complaint . . . shall be made within one hundred twenty days after the commencement of the action . . . . If service is not made upon a defendant within the time provided in this section, the court, upon motion, shall dismiss the action without prejudice as to that defendant, or upon good cause shown or in the interest of justice, extend the time for service." The interest of justice standard requires a careful judicial analysis of the factual setting of the case and a balancing of the competing interests as presented by the parties. Unlike an extension request premised on good cause, a plaintiff need not establish reasonably diligent efforts at service as a threshold matter. However, the court may consider diligence, or the lack thereof, along with any other relevant factor in making its determination, including expiration of the Statute of Limitations, the meritorious nature of the cause of action, the length of delay in service, the promptness of the plaintiff's request for the extension of time, and prejudice to the defendant. No single factor is determinative.
Deutsche Bank Trust Co. Ams., v. Lottihall, NY Slip Op 02999 (2d Dep't June 7, 2023)