In the past, testing was seen as a separate entity from production, but with the concept of DevOps and modern tools, testing can now be integrated into production to ensure speed and quality. This is achieved through continuous testing, feedback loops, production error monitoring, and build environments that allow testers to identify issues before releasing software to a wider audience. By leveraging these philosophies, companies can deliver high-quality products quickly, meeting the demands of customers who value both speed and quality.