You've got 3 very different things all in one sentence Firebase: Google's serverless webhosting and database offerings with things like user authentication, nosql and SQL databases, file storage Angular: a programming framework to make websites, CMS: Content Management System - there are gazillions of these, starting with Wix and hosted WordPress through self hosted WordPress, Joomla, Laravel, silverstripe, and onto the jamstack with Gatsby and eleventy as well as in-house offerings from every largish web development company. So, putting all those together I'm guessing that someone has used Angular and Firebase to build a CMS that they want to sell you. Will it be any good - it might be amazing, it might be crap. We won't know until we see it. Can you share a link?