DependaBot is a useful tool to regularly check for dependency updates. By helping to keep your project up to date, DependaBot can reduce technical debt and immediately apply security vulnerabilities when patches are released. How does DependaBot work?
* DependaBot regularly checks dependencies for updates
* If an update is found, DependaBot creates a new branch with this upgrade and Pull Request for approval
* You review the new Pull Request, ensure the tests passed, review the code, and decide if you can merge the change Reference:
https://samlearnsazure.blog/2019/12/20/github-using-dependabot/

Explanation:

See the solution below in explanation
Explanation:
To configure a virtual machine template in your DevTest Labs environment named az400-38443478-dtl1 with Windows Server 2016 Datacenter that includes the Selenium tool and the Google Chrome browser, follow these steps:
Create a Custom Image with Windows Server 2016 Datacenter:
In the Azure Portal, go to your DevTest Lab az400-38443478-dtl1.
Navigate to Configuration and policies > Custom images.
Use an existing VM or create a new one with Windows Server 2016 Datacenter.
After setting up the VM, capture it to create a custom image1.
Install Selenium and Google Chrome on the VM:
Connect to the VM via RDP.
Download and install the Selenium WebDriver for your preferred programming language from the official Selenium website2.
For Google Chrome, download the offline installer from the official website and install it on the VM3.
Generalize the VM:
Run the sysprep command to generalize the VM, which prepares it to be used as a template.
Shut down the VM after sysprep completes.
Capture the Generalized VM to Create a Template:
In the Azure Portal, navigate to the VM and select Capture.
Provide the required details and create the image.
Add Selenium and Google Chrome Artifacts to the Template:
Go back to the DevTest Lab az400-38443478-dtl1.
Select Artifacts and add Selenium and Google Chrome artifacts to the template.
Ensure these artifacts are configured to install during the VM creation process.
Create VMs from the Template:
Now, when you create a new VM in the DevTest Lab, select the custom image you created.
The VM will be provisioned with Windows Server 2016 Datacenter, and the Selenium tool and Google Chrome browser will be installed automatically.
By following these steps, you can ensure that all virtual machines created from this template in your DevTest Lab will have the required operating system, tools, and browser installed. Remember to replace placeholder names with the actual names of your resources where necessary.

Explanation:
App1 Canary and App2 rolling
App1 Canary would minimize app downtime for the first app, as it would only deploy new code when the canary has confirmed that it is functional - and if there are any issues, it would roll back to the previous version of the code.
App2 rolling would be the second option, as it would allow for frequent deployments of new code, while still giving the developers enough time to fix any issues that may have been introduced during new code deployments.