What does Sitecore use to improve site performance?

Sitecore utilizes caching strategies to enhance site performance significantly. Caching involves storing frequently accessed data in a temporary storage location, allowing for quicker retrieval and reducing load times for users. By leveraging caching mechanisms, such as item caching, output caching, and data caching, Sitecore can deliver content to users more efficiently. This means that rather than generating pages dynamically for every single request, Sitecore can serve pre-rendered or stored versions of content, which dramatically reduces server processing time and resource utilization.

The other options, while relevant in their contexts, do not directly focus on performance enhancement in the same manner as caching. Frequent content deployment can lead to improved engagement but may not inherently influence performance unless coupled with optimization strategies. Custom coding techniques could improve performance yields, but they are often more complex and less standardized than caching practices. User feedback mechanisms play a crucial role in understanding user needs and improving overall experience, but they do not directly contribute to the technical performance of the site in the way caching does.