Bulkification, SOQL/DML best practices, avoiding limits violations Lightning Web Components (LWC): Component lifecycle, wire service, event handling, parent-child communication
Aura Components:
Legacy support and migration to
LWC Visualforce:
Pages, Controllers, Extensions (legacy support)
Testing:
Apex test classes (75%+ coverage), mocking, @TestSetup, assertions Integrations
REST & SOAP
APIs:
Salesforce standard APIs, callouts from Apex, named credentials Data 360 Platform Events & Change Data Capture (CDC): Event-driven architecture, real-time integrations
Middleware:
MuleSoft, Informatica, or similar iPaaS tools
External Services:
Connecting external REST APIs declaratively via
External Services Authentication:
OAuth 2.0 flows (JWT, Web Server, Username-Password),
Connected Apps ETL & Data Migration:
Data Loader, Workbench, third-party tools (Jitterbit, Datawarehouse)