The TVB-403 certification targets developers and system administrators tasked with architecting custom applications on the Salesforce Lightning Platform. Candidates must demonstrate proficiency in designing data models using custom objects, fields, and complex relationship schemas. Mastery of declarative automation tools, including Flow Builder, validation rules, and formula logic, remains essential for enforcing business processes. Furthermore, the assessment mandates technical competency in managing security configurations such as role hierarchies, sharing rules, and permission sets. Developers must implement Lightning App Builder components and interface layouts to optimize user experience. Finally, practitioners must execute deployments using Change Sets and managed packages while maintaining platform integrity.