Ecommerce SEO shares the same foundations as SEO for any other website, but it faces problems of its own that don't exist on a services site: hundreds or thousands of product pages, filters that generate endless URLs, products that sell out and disappear... Ignoring these quirks is why many stores with great products never get organic traffic.
The challenge of duplicate product pages
When several products are very similar (sizes, colours, small variations), it's easy to end up with dozens of nearly identical pages competing against each other instead of adding up. Every page needs its own, sufficiently differentiated description so Google doesn't treat them as duplicate content.
Filters and endless URLs
Category, price or colour filters automatically generate thousands of URL combinations. If Google crawls and indexes all of them, "crawl budget" gets wasted on worthless pages instead of prioritising actual product listings. You need to decide, with judgement, which combinations are worth indexing and which aren't.
What to do with out-of-stock products
Simply deleting an out-of-stock product page destroys the ranking that URL had built up. It's better to keep it active (clearly marked "out of stock", offering alternatives, or letting people sign up for a restock alert) rather than turning it into a 404 error.
Content beyond product pages
Categories need their own descriptive text (not just a grid of products), and a blog with related content (buying guides, comparisons) helps capture informational searches that, later on, turn into sales.
Frequently asked questions
Do I need to write a different description for every product, even similar ones?
Yes, whenever possible. Even for a product very similar to another, its own description (even a brief one) avoids the duplicate content problem.
Should I index every filter page on my store?
No. Only filter combinations with real search volume are worth indexing; the rest is better blocked from crawling or marked "noindex".
Does ecommerce SEO take longer to show results than for a regular site?
It's usually a somewhat longer process, precisely because of the sheer volume of pages to optimise, but the return also tends to be higher, since this traffic carries direct purchase intent.