The Application Architect is responsible for designing and maintaining the application architecture blueprint that defines how systems interact and support business processes. They ensure applications are aligned with enterprise strategies, data requirements, and technology standards. The role involves defining interfaces, APIs, and integration patterns to enable interoperability and scalability. The Application Architect is also responsible for assessing and rationalising the application portfolio, identifying redundancies and opportunities for modernisation. They collaborate with Business, Data, and Technology Architects to ensure consistency across domains and compliance with governance standards. Ultimately, they enable applications to deliver measurable business value while supporting agility and innovation.