Azure DevOps Services vs CircleCI

• Flexible Requirements Hierarchy Management: AZDO makes it easy to track items such as features or epics as a flat list, or as a hierarchy in which you can track the parent-child relationship.
• Fast Data Entry: AZDO was designed to facilitate quick data entry to capture work items quickly, while still enabling detailed capture of acceptance criteria and item properties.
• Excel Integration: AZDO stands out for its integration with MS Excel, which enables quick updates for bulk items.

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• Multiple builds can be run at the same time in parallel.
• The CircleCI web interface (UI/UX) is very easy to understand and use.
• Easy Configuration to learn and use. Just a single configuration YAML file.
• Many integrations. We use the GItHub, Slack, and DataDog integrations.

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• Column sorting when in filtered states.
• A way to show cross-team dependencies.
• A customized "From" field for notifications. Sometimes when a mail comes from Azure DevOps the teams do not realize that I am sending it
• A way to do online poker that doesn't require a plug-in.

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• The "phases" their config file uses to separate out options seem very arbitrary and are not very helpful for organizing your config file
• No way that I know of to configure which version of MongoDB you use. You have to write your own shell script to download and start MongoDB if you want a specific version.
• Hard to access build artifacts in the UI

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• When I first VSTS it was with a team of developers who always work on their own. This project was the first one at the company that used six developers all work on the same product at the same time. Integrating someone else code into the system was an unknown entity. VSTS really helped move this new collaboration forward. The staff who were on this team then moved on work together on other teams because they knew how to handle this type of work.
• The learning curve on VSTS is quite large so make sure you have some of your best starting anew VSTS project. They will fail a few times but after a few mistakes they will get how to do things and your build, tests and deployments will all be automated.
• The user integration into VSTS is very good. As long as you developers can use Team Foundation Server source control, either Microsoft's or git, then they already have the permission to have VSTS access source control. This is very good.

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• It has eased the burden of standardizing our testing and deployment, making onboarding new developers much faster, and having to fix deployment mistakes much less often.
• It allows us to focus our process around the GitHub workflow, ignoring the details of whatever environment the thing we're working on is actually hosted in. This saves us time.

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