Answer: Key-based

Snowpipe REST endpoints use key-based authentication, which is explicitly documented in Snowflake's official documentation. The community discussion shows 100% consensus on option B, with a reference to Snowflake's documentation on key pair authentication for Snowpipe REST endpoints. OAuth (A) is used for other Snowflake integrations but not specifically for Snowpipe REST endpoints. Username and password (C) is used for standard Snowflake login but not for Snowpipe REST API authentication. Single Sign-On (D) is an enterprise authentication method for user access to Snowflake but not for Snowpipe REST endpoints.

Author: LeetQuiz Editorial Team