It means if your company does not have a website or social media presence, then they are not able to find you in their searches. Facebook alone has 2.37 billion active monthly users.
So if you want to remain in business, you want to have buyers. If you need buyers, then the place to find them and engage with them is online. So digital marketing is nothing but online marketing.
Digital marketing is the process of advertising your business or brand on online platforms using online tools.
How much the buying activity is going to go online in days and months to come cannot be emphasized enough. So if you are interested in taking your brand online and get noticed by your buyers, you need to do digital marketing.