Like any online service, your API users expect high availability and good performance. This also means one customer should not be able to starve another customer’s access to your API. Adding rate limiting is a defensive measure that can protect your API from being overwhelmed with requests and improve general availability. 

Similarly, adding quota management also ensures customers stay within their contract terms and obligations, ensuring you’re able to monetize your API. This is even more important for Data and GenAI APIs, where the cost of an API can be high and part of your COGS (Cost of Goods Sold). Without quota management, a customer could easily use far more resources than their plan allows, even if they stay within your overall server rate limits. 

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