You may wonder the effect of social media to SEO. In fact, social media is indirectly impacting SEO. SEO focus on the ranking of search results and  social media platform emphasis on the content and interaction with potential customers. However, if you link your social media account with your SEO by inserting your website link to your social media profiles, your chance of showing your business to your target customers increases. It is because when someone search for products or services related to your brand, not only your website, but also your social media profiles show up at the top of the results page. With the synergy, you should never forget the importance of social media to SEO. 

In view of this, you better choosing an agency which provided SEO and social media marketing services together. Some agency specializes in SEO while some familiar with social media marketing. You can choose either a SEO agency or social media marketing agency separately if you think SEO or social media is better than the others. But if you want to enlarge the effect, you should consider using agency concentrate on both SEO and social media marketing. This kind of agency usually have a SEO team, IT department and content team for writing social media content. With the cooperation of different teams, they can take care of your SEO and social media platform at the same time, to get the most out of the resources and maximize your ROI and deliver the best results.