Crawl budget refers to the quota recognised by search engines like Google in crawling how many web pages in a website will be crawled at a time during a specified time frame. Some factors determining crawl budgets are size of site, efficiency of server, and frequency in terms of update of content. Proper management of crawl budget makes possible the regular indexing by the search engines of pertinent webpages, thus improving their visibility on searches. Website owners can optimise crawl budget by removing duplicate pages, correcting broken links, enhancing the speed of the site, and employing robots.txt to limit crawler access to non-essential pages. Proper crawl budget management enhances indexing efficiency and performance in search engine optimisation.