There are four options, and deletion is rarely the best one
Before deciding anything, know what you are choosing between, because most stores only consider two of the four.
Keep the page live, marked as discontinued, with a clear pointer to what replaced it. This suits products people still search for by name, and products with reviews or content worth keeping. The page stops selling and starts directing.
Redirect to the successor product. This is the strongest option when a genuine replacement exists, because the visitor lands on something that does what they wanted and the page's earned value transfers to a page you are actively selling.
Redirect to the closest category. Weaker, because a visitor looking for a specific item gets a grid, but reasonable when there is no direct successor and the category is genuinely relevant.
Remove the page and let it return a not found response. This is right for pages with no links, no traffic and no search demand, such as a product that existed for a month and nobody noticed. It is a legitimate option, just a narrower one than people assume.
Work through them in that order for each product, rather than applying one rule to the whole catalogue.
Check what the page is worth before you decide
Three checks, none of which takes long, and together they answer the question for most products.
Organic traffic over the last year. A page still receiving visits from search has demand attached to it, and that demand does not stop the day you stop stocking the item. Look at the search terms too, because a page can receive traffic for a category term rather than the product name, which changes where a redirect should point.
Inbound links. A product that was reviewed, listed or written about somewhere carries value that will be lost if the URL stops resolving. This is the check that most often turns a delete into a redirect.
Internal links and referrals. Old email campaigns, blog posts, and links from your own collections all point somewhere. A page that is linked from several of your own pages will produce broken paths on your site if you remove it.
Run these checks in a batch rather than one product at a time. Export the list of discontinued products, join it to your analytics and your links data, and the decisions sort themselves into obvious groups. The middle group is the only one that needs thought.
Redirect rules that keep value, and ones that lose it
A redirect only carries value when the destination is a reasonable answer to why someone was on the original page. Relevance is the whole rule.
A discontinued product redirected to its direct replacement works. The same product redirected to the homepage does not, and search engines will generally treat a mass redirect to the homepage as though the pages had simply been removed. A grid of loosely related items sits in between.
Keep the redirects clean. One hop from the old URL to the final destination, not a chain of three that has built up over several catalogue changes. Chains slow the page down and lose value at each step. Audit them occasionally, because chains form by accident when a successor is itself later discontinued.
Use permanent redirects for products that are genuinely gone, and do not redirect a product that is only temporarily out of stock.
One more thing to check. If you redirect a product, remove it from your sitemap and from your product feed at the same time. A feed that still contains a URL which now redirects will produce errors, and a sitemap listing redirected URLs sends a confusing signal about which pages you consider current.
Sometimes the page is more useful than the product ever was
Keeping a discontinued product page alive can be worth more than the redirect, in a few specific situations that are easy to miss.
When people still search for the product by name, often years later, because it was well known or widely reviewed. That page can capture the search and route the visitor to what you sell now, which a redirect to a category cannot do as well as a page that says explicitly what happened and what replaced it.
When the page carries reviews and questions that answer things about your current range. Those are hard to recreate.
When the product was part of a series and customers still own it. A page explaining compatibility, replacement parts and what succeeded it is genuinely useful and quietly sells the parts.
In all three cases the page needs rewriting rather than freezing. Remove the buy button, state clearly that it is discontinued, say when, explain what replaced it and how the replacement differs, and link to it prominently. Leave the specifications, because that is what people are looking for.
What you should not do is leave the page looking like a normal product page with an add-to-cart button that does nothing.
Handle the feed, the ads and the internal links at the same time
Whatever you decide, the change has to reach every place that references the product, or you will create a different problem while solving this one.
In the product feed, remove discontinued items rather than leaving them with zero stock indefinitely. A feed full of products that will never return produces ongoing errors and makes real problems harder to spot. If you redirect the URL, the item must come out of the feed, because a landing page that redirects is a mismatch.
In the ad accounts, check for campaigns, ad groups or assets that name the product specifically. Search ads pointing at a redirected URL will still run and will still cost money.
On the site, update collections, menus and any hand-built links. Then run a crawl and fix the internal links that now point through a redirect, so visitors and crawlers reach the destination directly.
And write the decision down. A short record of what was discontinued, what it redirects to and when, saves an enormous amount of confusion a year later when someone asks why a URL behaves the way it does. On a catalogue that turns over regularly, this becomes a routine rather than a project.
Worked example, not a result
Sorting 60 discontinued products into decisions
- Direct successor exists
- 24 products, redirect to successor
- Traffic and links, no successor
- 9 products, keep live and rewrite
- Some traffic, loose match
- 13 products, redirect to category
- No traffic, no links
- 14 products, remove
- Removed from feed
- All 60
- Redirect chains fixed
- 7
Worked example, not a result