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What Is Algorithm?
SEO
Updated 18 September 2026
Quick Answer
An algorithm is the set of rules a platform (Google, Facebook, Instagram) uses to decide what content to show, and to whom — determining search rankings, social feed order, and ad delivery.
Algorithm vs. Ranking — What's the Difference?
| Algorithm | Ranking | |
|---|---|---|
| What it is | The rules/process making the decision | The outcome — your position in results |
Why It Matters
- Understanding roughly how a platform's algorithm works helps you make decisions that align with it, rather than fighting against it.
- Algorithms change over time, which is why marketing tactics that worked last year sometimes stop working.
How It Works
- A platform evaluates content or a page against many factors — relevance, engagement, quality signals.
- It ranks or displays content based on how well it scores against those factors.
- Platforms update these factors periodically, sometimes significantly changing what performs well.
Key Takeaways
- An algorithm is the rule set a platform uses to decide what to show and to whom.
- It changes over time, which explains shifts in what tactics work.
- Aligning with genuine relevance and quality is more sustainable than trying to exploit specific rules.
Frequently Asked Questions
Can I 'beat' an algorithm?
Not reliably — the sustainable approach is creating genuinely relevant, high-quality content that aligns with what the algorithm is designed to reward.
Why did my rankings or reach suddenly drop?
Algorithm updates are a common cause — platforms periodically change their ranking factors, sometimes with significant effects.
Are all platforms' algorithms the same?
No — each platform (Google, Instagram, Facebook) has its own algorithm optimizing for different things, like search relevance versus engagement.