Crawl budget is the number of pages a search engine is willing and able to crawl on a website within a given time period.
Crawl budget becomes important on large or complex websites. Search engines allocate crawl resources based on site authority, server performance, and perceived importance of pages.
Poor internal linking, duplicate URLs, and low-value pages can waste crawl budget and prevent important pages from being crawled regularly.
Optimising crawl budget involves improving site structure, removing unnecessary URLs, and ensuring priority pages are easy to discover.