The correct answer is Creation or ingestion stage.

Creation or ingestion stage is when data first enters the cloud environment and that is when SSL and TLS should be applied. SSL and TLS provide encryption in transit and they protect data as it moves from the client or source into cloud services so interception or tampering during the initial transfer is prevented.

Creation or ingestion stage should be the earliest point of defense for transport security. Later controls such as encryption at rest and access controls are still necessary but they do not replace the need for transport level protection at ingestion.

Consumption stage refers to when users or applications access data after it has been stored or processed. Securing data at consumption is important but it does not ensure the data was protected when it first entered the environment.

Storage stage covers data at rest and the controls for that stage involve encryption at rest and access policies. SSL and TLS are transport protections and they do not secure data while it is stored, so storage is not the correct stage for SSL/TLS when data first arrives.

Sharing stage deals with distribution of data between users or systems after the data is already in the environment. Transport protections may be used during sharing as well but the question asks about securing data when it first enters and that is the ingestion point.

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