This task can be performed using Sitescarf
Seamless announcement banners
Best product for this task

Sitescarf
marketing
Create, schedule and synchronise announcement banners across multiple sites with one click.

What to expect from an ideal product
- Easily create customizable announcement banners.
- Schedule banners to appear at specific times across different sites.
- Synchronize banner updates on all selected sites with one click.
- Manage and track banner performance from a single dashboard.
- Ensure timely and consistent messaging across all your online properties.