test techniques Questions

Should QA automation start being closer to code? E.g Laravel Dusk Or stick with the norm e.g Python Selenium

Can anyone introduce a performance testing tool that you feel good about. I am currently using this called PerfDog. It includes a deep analysis mode, offering in-depth insights into CPU scheduling, usage, thread running states, call stacks, and rendering screenshots. It allows me to pinpoint performance issues at the function or module level, enabling timely optimization and repairs. Additionally, PerfDog embraces collaboration with a web data management platform, facilitating multiple human collaboration analyses for comprehensive performance evaluation. I think its pretty good but I am also looking for something better, has anyone get the same experience as me? Or can you recommend me some other tools?

What do you think are the Top 5 challenges of performing testing of APIs, I am referring only to only functional testing. I have generally come across many folks who are very good from app and business understanding but are not sure how to perform functional testing on APIs, what other reasons do you think exist as challenges to API tesing.
 

I am implementing a project using simple-salesforce so I can manage and trigger events on Salesforce Marketing Cloud. The problem I have encountered is that the documentation is not explicit if I can use simple-salesforce to access the Marketing Cloud endpoints.

I've noticed even that the login method on simple-salesforce can't be done by the Salesforce Marketing Cloud credentials. When I try to do this I get:

SalesforceAuthenticationFailed: INVALID_LOGIN: Invalid username, password, security token; or user locked out.

Did someone have the same issue? Can I access the Salesforce Marketing Cloud Certification through simple-salesforce?