Upload speed tells you how fast data is able to get from your device to its destination. For many typical internet tasks upload speeds don’t have a huge impact.
Upload speeds however are critical for video chatting and uploading large files like photos, videos or cloud-synced backups.
Speeds over 500Kbps are the bare minimum for video chat. Speeds over 1.5Mbps should deliver smoother results. And 5-10 Mbps for allow for higher definition broadcasts and zippy file uploads.