Hi Michael!
There are 3 common approaches to your scenario which can be described as follows:
OPTION 1
This represents a very basic, good structure to be used when all service cities are deemed of equal importance:
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Build a unique landing page for each city served, optimized for each city + general info about your work in that city
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Build a unique landing page for each service, optimized for each service but not optimized for geo terms.
OPTION 2
Given Google's extreme bias toward physical location, this option can be used to maximize your optimization for your city of location, while still giving secondary focus to additional service cities where you lack a physical location:
-
Build a unique landing page for each city served, optimized for each city + general info about your work in that city
-
Build a unique landing page for each service, optimized for each service and also optimized for your city of location, strengthening the association between your services and your core city.
OPTION 3
This option should only be considered by companies with significant funding and exceptional creative resources that will ensure that all pages are unique and useful rather than duplicative, thin and harmful:
- Build a unique page for every possible keyword/geo combination. So:
Cloud Computing Sherman Oaks
Cloud Computing Van Nuys
Computer Repair Sherman Oaks
Computer Repair Van Nuys
etc.
*Again, this last approach should only be undertaken if you are positive the content you'll be developing has a definite purpose for users and that you won't end up weakening your website with a big menu of weak pages.
Options 1 & 2 tend to be the best bet for smaller companies with reasonable resources. Option 3 can work, but only where creative possibilities and big budget are available.
Hope this helps lay this out in a way that makes sense!