Exercise 3: How This Chapter Connects to seo1-7 — Possible Solution
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WHAT seo1-7 TAUGHT
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Per this chapter's own opening, seo1-7 covered domain/subdomain/URL
path structure from the building side - how to organize a site's own
architecture (where content lives, how subdomains are used, how URL
paths are structured) so that it's easy to crawl and easy to link
between internally.

WHAT THIS CHAPTER TEACHES INSTEAD
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This chapter uses the exact same three concepts - domain, subdomain,
path - but from the querying side: as filters typed into a search box
(site:domain.com, site:subdomain.domain.com,
site:domain.com/path) to restrict where a search looks, rather than
as decisions about where content should be placed when a site is
built.

WHAT STAYED EXACTLY THE SAME
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The underlying vocabulary and structural concepts are identical -
"domain," "subdomain," and "path" mean precisely the same thing in
both chapters. Nothing about what a subdomain IS changed; what changed
is which side of the relationship is being acted on - seo1-7 decided
how a site's structure should be built, this chapter uses that already-
built structure as a search filter.

WHAT GENUINELY CHANGED
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The audience and the action changed. seo1-7 is written for someone
building or organizing a site (a site owner/developer making
architectural decisions). This chapter is written for someone
searching an already-existing site from the outside, with no ability
to change its structure - only to query it more precisely using the
structure that's already there.

WHY THIS WORKS AS AN ANSWER
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It separates what's identical (the vocabulary/concepts) from what's
different (the direction of use - building vs. querying, and the
implied audience for each), matching the same building-side-vs-
querying-side distinction searchtech1-1 already drew between this
whole course and seo1 as a pair.