Architecture and crawlability
A search engine has a finite budget for your site, and it is spent on whatever it finds — including infinite filter combinations, session parameters, paginated loops and a staging subdomain somebody left open.
We map what is actually crawled and indexed against what should be, then close the gap: internal linking that reaches every page worth reaching, canonicals that agree with the URLs you serve, robots and sitemap directives that say the same thing as each other, and faceting that does not multiply.