Servoy has a n-tier architecture. In most situations it is used as displayed below, in 4-tiers:
Data layer (relational databases, files, email, webservices)
Servoy Application Server
Business rule layer (
Servoy Smart Client
,
Servoy Web Client
,
Servoy Headless Client
,
Servoy Batch Processor
)
Display layer (native, HTML, external apps)