Your Crawl Budget is the number of pages a search engine crawler, like Googlebot, is willing and able to crawl on your website within a specific period. It's not an unlimited resource; search engines have limited resources and prioritize which pages to crawl based on various factors.
A larger website with many pages, especially those that change frequently, needs a healthy Crawl Budget to ensure all important content is discovered and updated in the search index. Factors like site speed, internal linking structure, and the presence of duplicate content can all impact how efficiently your Crawl Budget is used.
For example, if your site has 10,000 pages but Googlebot only crawls 100 pages a day (your Crawl Budget), it will take a long time for new content or updates to be indexed. Optimizing your site by fixing broken links, removing low-quality pages, and improving site speed helps search engines crawl your site more efficiently, making the most of your allocated Crawl Budget.