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Hello, There is no discernible difference to Google whether your internal links are located through buttons, icons, or the sidebar. The primary navigation bar is held as a slight priority over internal links on your pages, but only because of link juice flowing through your site. If your links are tracking through your services page, your primary concern should be around user experience - are users more likely to use the buttons that are currently there, or would a sidebar create easier transitions from page to page? The answer to that question should determine whether you decide to change up your page. Personally, I think you are better off with buttons and/or images to help visitors find exactly what they're looking for when they transfer to your services page. Hope this helps and feel free to get in touch if you have further questions. Cheers, Rob