Object-oriented (not orientated!) design is a fundamental principle of modern software engineering, a crucial concept that every developer needs to understand and employ effectively. Software design patterns like object-oriented design serve as universal solutions to common problems, across a range of instances and domains. As software engineers advance in their careers, they actually often start using these patterns instinctively, even without knowing it.
Domain Driven Design (DDD) is usually associated with microservice architectures. As microservice architectures have been perceived as burdensome and overly complex, so too have organizations started to call into question the relevance of DDD initiatives. The argument is usually that unless an organization reaches a mega-scale that requires eventing to keep and micro-services to scale horizontally, such architectures are overkill.