SearchController

In plain words: Salesforce Object Search Language (SOSL) in Lightning Web Components (LWC) allows you to search across multiple unrelated standard and custom objects (like Accounts, Contacts, and Leads) in a single query. When paired with an Apex backend, SOSL scans text, email, and phone fields across your org and returns categorized results directly to your front-end component. Standard SOQL queries are designed to fetch specific records from a single object or related parent-child hierarchies. When building global search bars or multi-entity lookup utilities, executing multiple separate SOQL queries exhausts transaction limits and creates performance lag. Combining SOSL with Lightning Web Components delivers an optimized search engine that queries multiple objects simultaneously in a single roundtrip.