Necessary for performance of such service is like needing your address to ship you food or your identity data to connect you with individuals seeking to employ you. EG the info is necessary and relevant to the performance of the actual task at hand not I need all your data so I can sell it to make money. The alternative is so expansive that it would automatically authorize all possible data collection which is obviously not the intent of the law.
Necessary for performance of such service is like needing your address to ship you food or your identity data to connect you with individuals seeking to employ you. EG the info is necessary and relevant to the performance of the actual task at hand not I need all your data so I can sell it to make money. The alternative is so expansive that it would automatically authorize all possible data collection which is obviously not the intent of the law.