MEGA is a cloud storage company.
Free users get 50GB of storage to start, but there are expiration dates for parts of the storage. You immediately get 15GB of permanent storage, and 35GB of storage that expires in 30 days. The free storage limit is always 50GB total. You can temporarily increase your storage by participating in the achievement program:
Install MEGAsync (get 20GB storage space for 180 days)
Install mobile app (get 15GB storage space for 180 days)
Invite a friend (get 10GB storage space for 365 days)
Here's one workflow for uploading and sharing a file.
Go to mega.nz and create a MEGA account.
Log into your account online.
Click the "File Upload" button in the upper right of the site and upload your file.
Right-click the thumbnail for your uploaded file and choose "Get link".
For Export options, click "Link without key".
Copy the generated link.
Send the link to the person you want to share the file with.