Areas of Focus
Azure DevOps Engineers focus on automating, managing, and optimizing software development and deployment pipelines. Azure Software Architects/Developers concentrate on designing, building and implementing software solutions. The primary focus of each role is significantly different, but the common ground is the Software Development Life Cycle. I don't believe you can be successful in either role without understanding the process around building great software.
Key Responsibilities
Key responsibilities and tools/technologies are what truly define the roles and are the differentiators between them.
Azure DevOps Engineer
Azure Software Architect/Developer
Tools & Technologies
Tools and technologies used by each of these roles are also key differentiators.
Azure DevOps Engineer
Approach to Work
The Azure DevOps Engineer is more hand-on with automation, scripting, and the deployment process where the Azure Software Architect/Developer is more involved in software design, coding and technical decision-making;
DevOps Engineers work closely with developers, IT admin and security teams to aid in deployments where Architects/Developers work with stakeholders, product teams, and DevOps engineers to implement solutions. There is a collaboration between DevOps Engineers and the Development/Architecture teams.
Summary
I am genuinely grateful to have experienced multiple roles on multiple projects. Many times I get the opportunity to wear many hats on a single project. I have found that these specific project roles are confused within a project or that the DevOps Engineering role is overlooked as a nice-to-have or pushed onto the development team.
Azure DevOps Engineers and Architects/Developers have distinct but interdependent roles. The best results come from a strong collaboration between both roles.
As for which role I personally prefer... I like the variety and the ability to do both..