* The awarding institution: The reputation and accreditation of the online institution granting the diploma are crucial. MoE will likely favor diplomas from accredited institutions recognized internationally or regionally (e.g., by agencies in the US, UK, Australia, etc.). An unknown or unaccredited online university is highly unlikely to be accepted.
* The specific program: Even from an accredited institution, the specific online diploma program's content and rigor will be assessed.
* The purpose of the diploma: Whether the diploma is for educational credentialing, professional licensing, or immigration purposes will drastically affect acceptance. Requirements are stricter for professional licensing or immigration.
* Individual university policies: While MoE sets general guidelines, individual universities in Taiwan have their own admission policies and may have more stringent requirements for online diplomas than others.
In short: You cannot assume that an online diploma will automatically be accepted by the MoE or Taiwanese universities. You must individually verify with the specific university or relevant department within the MoE, providing detailed information about the online program and institution. Contacting the university's admissions office directly is the only way to get a definitive answer.