Here what i’ve on

event.requestContext.authorizer

authorizer: {

iam: {

accessKey: 'xx',

accountId: 'xxx',

callerId: 'xx:CognitoIdentityCredentials',

cognitoIdentity: [xx],

principalOrgId: 'aws:PrincipalOrgID',

userArn: 'arn:aws:sts:xxxassumed-role/xxx',

userId:' xxx'

}

},

There is an

userId

, but don’t know if I can use it as unique reference of my user.

Seems legit to use userId after reading some articles.

Hmm, it seems that the

userId

is not unique, my bad. I’ve two options: Identity Pool User Id or User Pool User Id 1. For Identity Pool User Id is simple because this one is provided on the request context. 2. For User Pool User Id is less trivial because, even though this one is provided too, I have to parse it.

If I understand well, if I want to enable the user to use multiple sources of logins, it’s better to use Identity Pool User Id because I can federate them and keep the same id.