The first element to describe in the engineering viewpoint is the structure of the EV Object Types (Draft)#Container Objects that help structuring the systems supporting the RI processes. 

An  EV Object Types (Draft)#Container Objects is an structural engineering object, EV Object Types (Draft)#Container Objects help structuring the systems supporting the RI processes. There are four possible types of container objects: node, nucleus, capsule and cluster ⁰¹.

The ENVRI RM engineering viewpoint recommendation defines the distribution of objects as services. In this configuration, EV objects are distributed in four main containers which group customer integration interface objects, collaboration integration interface objects, management components and domain function components.

• Customer Integration: provides interface components (APIs) which allow the use of the functionality by different service clients. This can include exposing management functionalities so that the service can be controlled remotely.
• Downstream Integration (Collaboration Integration): provided to allow the service to call other services and back end components. This includes calling persistence layer components, such as storage manager components.
• Service Management: provided for management and monitoring of the service. This allows controlling the service (start, stop, pause, restart) as well as providing data for troubleshooting, logging, and provenance. 
• Service Behaviour: provided to implement service behaviour. This is where the main functionalities of the service are located.