Looking for Feasible MAN solution

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Hi This is Karthik from Lazada SE Pte ltd Singapore, I am senior network engineer, we have more than 8 office location in Vietnam Hanoi, HCM & Tan Binh etc. we would like explore with get these location connected via P2M dedicated lines , might be cost effective and reliable tech such like Metro Ethernet, ELAN etc.. Looking for some valuable information from ISP and support & sales team, Thanks in advance and Appreciate it.