Fill in the blank: To manage rate limits, ___ temporarily store data on their end.

In the HubSpot Data Integration certification, data caches are the correct answer because they allow an integration to temporarily store a local copy of frequently accessed data, thereby reducing the total number of redundant API calls made to HubSpot's servers. By serving requests from a cache instead of making a new network request every time a specific piece of information is needed, a developer can stay within HubSpot's strict daily and burst rate limits while maintaining high application performance. This strategy is particularly vital for read-heavy integrations, as it ensures the system remains responsive and avoids the "Rate limit reached" errors that occur when an integration exceeds its allotted request volume.