The Drupal Kit includes two components related to social media. The "Add to Any" component provides links to share a page from the website on one or more social media platforms, or via email. The "Social Links" component provides links to your organization's account on social media platforms.
Link to your organization's social media accounts
The Social Links component, shown below, includes social media icons that link to an organization's social media presence. See https://drupalkit.its.utexas.edu/docs/configuration/social_media_icons.html
Provide ready-made share links to page content
The AddToAny module provides a configurable block, shown below, contain links for site visitors to share page content using common social media outlets. See https://drupalkit.its.utexas.edu/docs/configuration/social_media_share_links.html#add-social-sharing-links-to-a-specific-flex-page