Functional review

This page is for Documentation, version Integration guides (default). For other versions, use one of these documentation indexes: - Integration guides (default): https://avalara.ferndocs.com/docs/integration-guides/llms.txt - Refactor guides: https://avalara.ferndocs.com/docs/refactor-guides/llms.txt - Get certified: https://avalara.ferndocs.com/docs/get-certified/llms.txt - Agent to Agent (A2A): https://avalara.ferndocs.com/docs/agent-to-agent-a2a/llms.txt - AI use cases: https://avalara.ferndocs.com/docs/ai-use-cases/llms.txt - API versioning: https://avalara.ferndocs.com/docs/api-versioning/llms.txt