Microsoft Power Automate is designed to automate repetitive tasks.
For example, you want to automatically use a document from a specific directory in SharePoint for your signature process.
With Power Automate you can quickly and easily edit or forward data, such as documents, between different software solutions. You decide when which file should go where. And all this without programming anything. Similar automation platforms are e.g. IFTTT or Zapier.
Together with PowerApps and Power BI, Microsoft Power Automate is part of the Microsoft Power Platform product family.