It is always good to know difference between Process & Function, it goes in hand to hand but have differences in it.
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ITIL v3 has 26 processes, which have been segregated into five process areas service strategy, service design, service transition, service operations, and continual service improvement.
The process is a sequence of activities with inputs, triggers, and outputs and delivers specific outcomes to the customer.
The function is a team or a group of people who perform a set of activities.
ITIL v3 defines four functions of Service Desk, Application management, Technical Management, and Operations Management.
P.S - It is incorrect to dismiss the ITIL V3 processes as no longer relevant. AXELOS state that the new ITIL 4 does not invalidate the earlier ITIL V3 (2011) core publications. (Reference: ITIL Process Map for ITIL 4)
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Adding to @AAT
In this video Stefan Kempter explains how we can provide reference processes and process templates for the new edition of ITIL 4 (7:26 min).
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ITIL v3 has 26 processes, which have been segregated into five process areas service strategy, service design, service transition, service operations, continual service improvement.
ITIL v3 defines four functions of Service Desk, Application management, Technical Management, and Operations Management.
For details please check the reference: Lists 26 ITIL Processes & 4 ITIL Functions – ITIL Docs - ITIL Templates and Training Courses
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