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Is SEO Worth It? Pros and Cons, What SEO Agencies Do, and How to Know If SEO Is Working

Zia Ur RehmanFounder & Lead SEO Strategist Updated 8 min read
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  1. Do I need SEO for my website?
  2. Pros and cons of SEO
  3. What does an SEO agency actually do?
  4. How to know if your SEO is working
  5. Is SEO performance marketing?
  6. FAQ

Quick answer

SEO is worth it for most businesses whose customers search online. It builds traffic you don't pay for per click, and that traffic keeps growing over time. It's slower than ads and needs steady work. You'll know it's working when impressions, rankings for buying searches and, most importantly, organic leads and revenue rise in Search Console and GA4.

Key takeaways

  • The upside: traffic that compounds, more trust, cheaper leads over time and visibility in AI answers.
  • The downside: it's slow to start, nothing is guaranteed and it needs ongoing work.
  • A good SEO agency handles technical fixes, content, local SEO, links and reporting.
  • Judge it on leads and revenue from organic search, not rankings alone.

Do I need SEO for my website?

If your customers search for what you sell, yes.

If every customer comes through referrals or a marketplace, SEO is less urgent. Even then, you still want a site Google can read properly, because people search your name before they call, and AI tools describe your business based on what they find.

Pros and cons of SEO

We'd rather you go in with your eyes open:

ProsCons
Traffic you don't pay for per clickTakes months to build
Builds trust and authorityNo guaranteed rankings
Compounds over timeAlgorithm updates add volatility
Feeds AI Overviews & ChatGPT citationsNeeds ongoing content and maintenance
Lowers blended cost per leadCompetitive niches need investment

Be wary of anyone who only shows you the left-hand column. SEO is a good investment, not a guaranteed one.

What does an SEO agency actually do?

When it's done properly, the monthly work looks like this:

  • Technical audits and fixes (indexing, speed, schema)
  • Keyword research and content planning
  • On-page improvements and new pages
  • Local SEO and Google Business Profile
  • Link building and digital PR
  • AI search (AEO/GEO) optimization
  • Monthly reporting on leads and revenue

That's what's included in our SEO service and SEO packages. If your current agency can't tell you which of these it did last month, ask.

How to know if your SEO is working

Check these four, in this order of importance from the bottom up:

  1. 1Search Console: impressions and clicks rising for searches that don't include your brand name.
  2. 2Rankings: improving for buying keywords, not just easy vanity terms.
  3. 3GA4: organic leads, calls and sales going up.
  4. 4Revenue: cost per organic lead falling over time.

If six months pass with no movement in impressions or leads, something is wrong. The usual causes are technical blocks, thin content or the wrong keywords, and all three can be fixed.

Is SEO performance marketing?

Not in the traditional sense. Performance marketing usually means paid channels billed on results.

But we think SEO should be measured like performance marketing: on leads, revenue and cost per customer. That's how we report it to every client, and it's the fastest way to tell whether your SEO is actually earning its fee.

Frequently asked questions

Is SEO worth it for small businesses?

Usually yes, especially local SEO and Google Business Profile optimization, which deliver leads without paying per click.

Do you have to pay for SEO?

You can do SEO yourself for free; paying an agency buys expertise and time. Rankings themselves can't be bought.

Why is my SEO not working?

Common causes: indexing problems, targeting keywords that are too competitive, thin content, weak authority, or tracking that doesn't capture organic leads.

Sources

Platform rules change often, so we check sources at every update. Last reviewed October 12, 2026.

Zia Ur Rehman

Written by

Zia Ur Rehman

Founder & Lead SEO Strategist, DigiEthic

Zia Ur Rehman is the founder of DigiEthic, with 14 years of experience in digital marketing. He works hands-on across technical SEO, AI search optimization (AEO/GEO), Local SEO, Google Ads and Meta Ads for service businesses and e-commerce brands.

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