# Algorithm

The set of mathematical rules that determines which signals search engines evaluate, and with what weight, when ranking web pages.

**Algorithm** is the complete set of mathematical rules and signals that search engines use when evaluating and ranking web pages to deliver the most relevant and highest-quality results for user queries.

Google’s search algorithm combines hundreds of ranking signals; the main ones include:

- Content quality and topical relevance
- Backlink profile and authority
- User experience (Core Web Vitals)
- Mobile friendliness
- Page freshness
- Local and linguistic signals
- Match with user intent

Google makes thousands of small changes (algorithm updates) every year. The vast majority of these are not announced; only major updates such as “core updates” are officially disclosed.

**Tip:** Instead of trying to chase algorithm changes, focus on content that delivers real value to users and a solid technical foundation. In the long run, this is the only durable strategy.