vSphere

Security & Role‑Based Access: Offers strong VM‑level security and access‑control models.

Scalability & Enterprise Readiness: VMware scales well across small, medium, and very large organizations.

Rich Feature Set: Users praise features like vMotion, HA, DRS, SRM, and snapshotting for improving uptime and workload flexibility.

Ease of Use & Management: Easy‑to‑use interface; vCenter provides a clean single‑pane‑of‑glass for administration.

Performance, Stability & Reliability: Very stable and high‑performance virtualization platform; widely regarded as one of the most dependable hypervisors.

Technical Support Issues: Complaints about slow or reduced‑quality support, especially after the Broadcom merger.

Licensing Model Complexity: Users dislike VMware’s complex and frequently changing licensing terms.

Licensing Cost & Pricing Model: High licensing costs are the most common complaint across all platforms.