Scaling Method Comparison

Write a substantive 2000 word comparison of the four scaling methods below.   

LeSS (Links to an external site.)

Nexus (Links to an external site.)

Disciplined Agile Delivery (Links to an external site.)

SAFe (Links to an external site.)

Discuss the following for each method

1. Roles - discuss the roles in this method that is not part of Scrum and how they impact the method

2. Processes- discuss any processes in the method that are not part of Scrum and how they are used within the method

3. Artifacts - discuss any artifacts (i.e. product backlog is a Scrum artifact) that are not part of Scrum and how they are used within the method

Make sure to use APA style and cite all sources.