
Amazon Cognito
6.2#23 in identity and access management softwareAndroidiOSWebAPI
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Cognito suits developers adding identity and access control to web or mobile apps, including applications using social or enterprise identity providers. Its listed integrations and SDKs also support teams building around AWS services.
FusionAuth suits teams managing end-user identity that want deployment choices from self-hosting to managed cloud. It is not positioned as a desktop integration or Active Directory replacement.