All third-party integration with Mastodon occurs via a Mastodon application (an application defined at your Mastodon instance), and every application is owned by one and only one Mastodon profile. You could either develop and code your own service to operate your application, or you could use an existing service to act as your agent.
The SocialOomph service is the agent that acts as the operator of your Mastodon application.
This arrangement means you own the Mastodon application that posts to your Mastodon properties, and you use SocialOomph as the software engine to do that posting for you.
It holds the following benefits: