¹https://www.pwc.com/us/en/advisory-services/publications/consumer-intelligence-series/pwc-consumer-intelligence-series-customer-experience.pdf
²https://testlio.com/blog/10-stats-to-prove-that-qa-helps-keep-customers-happy/
¹https://www.pwc.com/us/en/advisory-services/publications/consumer-intelligence-series/pwc-consumer-intelligence-series-customer-experience.pdf
²https://testlio.com/blog/10-stats-to-prove-that-qa-helps-keep-customers-happy/