call to action

• CTA (initialism)

call to action (plural calls to action)

1. An appeal for action.

   Synonyms: trumpet call, clarion call

2. (marketing) A design (words, picture, or otherwise) to prompt an immediate response or encourage an immediate sale.

• call to arms
• wake-up call

• “call to action”, in Cambridge English Dictionary, Cambridge, Cambridgeshire: Cambridge University Press, 1999–present.
• “call to action”, in Lexico, Dictionary.com; Oxford University Press, 2019–2022.