Google Marketing Platform helps advertisers to execute more efficient marketing: to post ads, measure performance and optimize digital media from multiple different sources.
There are some products that can be integrated with Google Analytics:
Google Tag Manager
Google Tag manager is all in one tag and track tool to connect Google marketing apps and native family of apps using a single tracking manager. Google Tag Manager replaces the additional effort of a web coder to put individual Google Analytics identification on each website element to measure performance rather a single GTM tag installed on a website can help export and import metrics within the Google family (example Data Studio).
Google Tag Manager enables quality testing a website, enhance SEO, reduce page load speed, and overall improve the performance measuring process within G
Google family of apps.