Solution Architecture and Design Questions

Designing and architecting end to end technical solutions for enterprise and complex systems, covering both the methodology for approaching architecture problems and the practical component level design work. Candidates should demonstrate a repeatable structured approach to elicit and document functional and non functional requirements, identify constraints and stakeholders, evaluate and compare multiple architectural options, and justify technology choices. They should produce high level and component level designs that show major services, presentation layers, application tiers, data layers, data flows, storage strategies, application programming interfaces, integration points with external and third party systems, and data movement and transformation. Strong responses explicitly address quality attributes such as scalability, performance, availability, fault tolerance, reliability, consistency and security as well as compliance and data protection concerns. Operational concerns must be covered including deployment topology, multi region and hybrid cloud strategies, monitoring and observability, logging, capacity planning, backup and disaster recovery, deployment and release strategies, maintenance, and operational run books. Candidates should discuss communication patterns including synchronous remote procedure calls and asynchronous messaging, storage trade offs between relational and non relational datastores and data warehouses, failure modes and mitigation strategies, incremental evolution and migration paths, and cost and feasibility constraints. Interviewers assess the ability to present clear diagrams, explain interactions and failure modes, reason about trade offs, and justify design decisions against requirements and constraints.