Which two types of testing should you perform?

Functional and Non functional testing

Good day Polina,

Here is my response :

Functional and Non-Functional Testing.

Functional testing confirms the system does what it's supposed to do the features, business logic, and workflows match the requirements.

Non-functional testing confirms it does that well enough for real users performance under load, security, usability, reliability. A checkout button that works perfectly for one tester but buckles at 200 concurrent users has passed functional testing and still isn't shippable. You need both to sign off on a release with real confidence.

Thanks,

Ramanan

Thank you everyone for participating in the challenge!🎊
And we have a winner ​@Saranya Muralikumar 
Congratulation, I will reach out to you shortly to organize the prize delivery🎉