Digital Marketing is a very popular internet based technique to promote and advertise the websites, brands, companies and their products collectively and separately in different ways using different techniques being a part of digital marketing.
Digital Marketing contains different parts like (SEO, PPC, SMO, SEM), all of these perform digital marketing in their own way.
In these techniques mentioned above, some (PPC, SEM) are paid services,
for which customer have to spend some money to avail these services. While
some like (SEO, SMO) are free services for which customer have to pay
nothing to avail these services.