iTunes Match from Apple. (I think the limit is still 100,000 songs.) iTunes Match gives you access to all of your music on all of your devices, even so

iTunes Match from Apple. (I think the limit is still 100,000 songs.) iTunes Match gives you access to all of your music on all of your devices, even songs that you've imported from other sources such as CDs. https://support.apple.com/en-us/108935 https://support.apple.com/en-us/108935