Udemy's appeal for VCP-VVF Administrator prep is breadth and price — a marketplace of independently produced practice-test courses covering VVF's vCenter and ESX compute, vSAN storage, networking, and VCF Operations topics, usually at a fraction of official training rates. Several 2V0-16.25 practice-test sets appeared soon after the VVF 9.0 exam launched.
The gap is the same one that shows up across any self-paced marketplace: a course or practice-test set can't tell you specifically which of VVF's vCenter and ESX compute, vSAN storage, networking, and VCF Operations topics you're actually weak in. You finish the course knowing your last score, not knowing whether you've retained enough to pass.
Edureify's Diagnostic maps your understanding across VVF's vCenter and ESX compute, vSAN storage, networking, and VCF Operations topics on day one, and the Readiness Score keeps updating as you practice — so instead of a vague sense of completion, you get a specific, evolving answer.