Create and manage SNS topics (standard and FIFO) for pub/sub messaging. Publish messages or message batches to topics, directly to SMS phone numbers, or to existing mobile platform endpoints. Subscribe and unsubscribe endpoints using various protocols. Configure message filtering policies so subscribers receive only relevant notifications. Send SMS text messages, inspect SMS account status, manage SMS defaults, check opt-out status, and list origination numbers. Configure topic attributes including delivery policies, server-side encryption with KMS, FIFO throughput scope, access policies, archive policies, replay policies, and tags.
