quality management Questions

I am in search of an open source tool so that I can automate testing of a Windows Desktop application.

I am interested in hearing your thoughts on how End to End testing across multiple applications could/should be managed across agile teams, where the teams are responsible for an application/system with integration with another application/system.

I'd be interested in knowing how other companies handle this from a strategic and project level.  Thanks

how to test vulnerability of ecommerce, whether the applied security is properly working or not?

whether the website can be hacked by anyone or not

In traditional waterfall and agile processes we implement a test strategy to set expectations (and receive feedback) on approach for a release (multiple sprints of work) and test summary to capture results of the execution (functionl, security, and performance testing).  

In a a CI/CD model when we have a 2 week sprint and plan to deploy every 2 weeks it seems a bit cumbersome to do a strategy and summary every 2 weeks.  Ideally the summary could be pulled from an automation tool and produced to a dashboard so that should not be too bad.

Is there a different approach to the strategy?  

Are there other quality tollgates (maybe a bad choice of words) that we should consider?

From a quality process audit perspective is there anything else to consider?

Any feedack appreciated.

-Jeff