On-premises
Local deployment can provide direct control over infrastructure and plant connectivity, but requires internal lifecycle management for servers, databases, backups and upgrades.
Cloud / SaaS
SaaS can reduce platform administration and speed updates, while introducing dependency on WAN connectivity, vendor service availability and cloud identity.
Hybrid / edge
Hybrid designs keep time-sensitive collection or buffering near production while central services run in a data center or cloud.
Decision criteria
Evaluate outage behavior, recovery objectives, data volumes, plant autonomy, regulatory requirements, integration latency and support capability rather than choosing deployment by trend.
MES terminology and boundaries vary among plants and vendors. Validate data ownership, safety impacts, interfaces and change control against your actual manufacturing architecture and approved procedures.