You must find out if the company you’re going to hire has done this kind of work before. They need to have proof of their past work, such as links to pages they have helped with on their website. If you don’t see any examples on their website or social media page then you may want to email them to ask if they can show you some of their work privately. Sometimes people don’t have any experience, and you want to avoid working with them until they can prove that they know what they are doing when it comes to working with SEO.