Universal Containers business users often observe that newly released features are resulting in other previously existing and stable functionality being broken. Which approach should an Architect recommend to prevent regression?

Universal Containers has an active production org; and they are planning to release some new features to it next month. The team is working to prepare .1 deployment plan and reached out to the technical architect for inputs on rollback strategy.
What should a technical architect recommend?

Universal Containers is delivering many changes to its Salesforce system. Adoption reports are discovering that many features are unused. The steering committee wants this to change and is looking to the architect for advice.
What should an architect recommend to overcome this?

At Universal Containers, Salesforce administrators are making changes to the permission sets under instruction from the business. Randomly, various SOQL statements are failing.
What strategy could be advised to bring this issue to the developer's attention earlier?

A developer was trying to retrieve the metadata from an org and ran the sfdx force:source:retrieve command. When the command was run, the developer received the error message: "This command is required to run from within an SFDX project" What can be two possible reasons that caused this problem? Choose 2 answers