Artificial intelligence is profoundly transforming the way software is developed in the business world. Its impact is already evident in day-to-day tasks such as code generation, refactoring, technical documentation, test automation and error analysis. However, to limit its value to a mere question of productivity would be to scratch only the surface. The real opportunity lies in how AI can help build applications that are more robust, more secure and better aligned with the demands for quality, scalability and regulatory compliance that characterise organisations such as Telefónica. For years, the developer’s role has been shaped by the need to balance speed of delivery, technical soundness and security. Today, with the emergence of generative AI and intelligent tools applied to the development cycle, that balance is entering a new phase. Many repetitive or low-value-added tasks can be significantly accelerated: from proposing initial code structures to creating unit tests, reviewing queries, drafting documentation or the preliminary identification of incidents. This frees up time for developers to focus on what truly adds strategic value: architecture, business logic, service resilience, performance and decision-making based on technical judgement. How artificial intelligence is transforming the day-to-day work of developers in enterprise environments Within Telefónica, artificial intelligence no longer acts solely as an assistant for specific tasks, but as a capability that supports virtually the entire development process. Its impact is felt from the earliest stages – such as refining the specification and designing the architecture – right through to implementing the solution and designing tests. This is profoundly changing the way developers work; they are spending less and less time writing code manually and more time directing, validating and ensuring the quality of what is built with the help of AI. In this new landscape, the developer’s value lies in activities involving greater technical responsibility: correctly