Webmaster Tools
This is the stack this site itself runs on, ordered as a loop: measure, get indexed, monetise, check. Analytics answers who came, from where, and what they did — lightweight options deploy in minutes and are privacy-friendly, while full-featured ones give finer detail at the cost of consent and compliance work. The indexing group is how you tell search engines what your site is; submitting a sitemap and reading crawl reports both happen here, and when pages are missing from the index the crawl report is more useful than resubmitting the same address. Ad platforms sit behind their own content and policy requirements, so read those before integrating. The testing group belongs in every release routine: performance scores, security headers, uptime.
