The role of a solution architect in tech projects is to design and plan the structure of complex software solutions. They bridge the gap between business requirements and technical implementation by assessing organizational needs and recommending appropriate technology stacks (e.g., cloud services, frameworks). Solution architects are responsible for creating blueprints that guide development teams, ensuring that projects align with business objectives while meeting performance and scalability requirements. They also collaborate with stakeholders to identify potential risks and challenges, providing strategic foresight throughout the project lifecycle.