You can use the following authentication methods to connect to Snowflake:

Standard. Uses Snowflake account user name and password credentials to connect to Snowflake.
For
application ingestion
tasks, you can use only the Standard authentication method.
Authorization Code. Uses the OAuth 2.0 protocol with Authorization Code grant type to connect to Snowflake. Authorization Code allows authorized access to Snowflake without sharing or storing your login credentials.
KeyPair. Uses the private key file and private key file password, along with the existing Snowflake account user name to connect to Snowflake.
Client Credentials. Uses the OAuth 2.0 protocol with the Client Credentials grant type to connect to Snowflake.
Doesn't apply to Mass Ingestion application and database ingestion tasks.

You create a Snowflake Data Cloud connection on the Connections page. You can then use the connection when you read from or write data to Snowflake.