A boost starts with an existing post
It can be useful when the main goal is to put a strong post in front of more people and the targeting needs are simple.
It is not automatically a lead-generation strategy.
Ads Manager gives more campaign control
Ads Manager supports more detailed campaign objectives, audience options, placement decisions, creative variations and conversion measurement.
That extra control matters when the business is trying to generate leads, sales or tracked website actions.
The creative still matters
Neither method can rescue a weak offer or confusing message. The post or ad has to make the value clear enough for someone to stop, understand and act.
Use the lightest tool that fits
If the aim is local awareness around a proven post, a boost may be enough. If the business needs structured testing, lead tracking or multiple audiences, build the campaign properly.
