My recommendations to optimize your directory structure for the non-secure, http: section of your site are as follows:
- Limit your site depth to no more than four levels if at all possible (i.e., so that any given page is no more than three clicks down the navigation from the homepage). If you can, shoot for just three levels.
- Limit your site span to no more than eight, where span is the maximum number of pages that sit under another page in the navigation.
- This gives an overall maximum number of pages of 1+(8^3) = 513, which should be more than enough for all but the most content-rich of sites.
- If you do have a bigger site, in general, simply tick up the numbers, e.g., to five levels and a span of ten.
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