Which marketing strategy do you prefer and why?

Both

SEO - put the efforts for a year or so & leverage thereafter!

@raha_golamini Please answer this question ;)

You're probably marketing in the dark if you don't have a marketing strategy. You test many hypotheses, and the lion's share of your marketing budget goes to waste on an infinite number of hypotheses. Strategy is analytical work that makes all your promotional activities (like Facebook ads) super-targeted. A marketing strategy must have a clear structure of the executives: who will implement the strategy, who is responsible for what, and who has what KPIs.