Instead, I recommend:

A one-time purchase that rivals Illustrator in power and performance.

She glanced at LICENSE.TXT. It contained nothing but a name: Elias. No email, no serial number—just the word, like a signature. Mira felt foolish for being moved by a filename, but the work had a presence, a quiet insistence. She wondered who Elias had been.

If you're interested in using Adobe Illustrator CC 2015, consider the following options:

It typically requires users to disconnect from the internet to prevent Adobe from verifying the code against its servers.

By following these recommendations, individuals can ensure a safe, creative, and productive experience with Adobe Illustrator CC 2015.