A digital marketing company is an organization that specializes in providing online marketing and advertising services to businesses and brands. Its main objective is to help companies to promote their products or services on the internet, using digital marketing strategies and techniques.

These companies often offer a variety of services, including:

1. Digital marketing strategy: Elaboration of customized plans and strategies to meet the online marketing objectives of companies. This may involve market research, targeting, identifying relevant marketing channels and creating an action plan.
2. Search engine optimization (SEO): Implementation of techniques to improve the visibility and ranking of a website in the results of search engines, such as Google. This includes content optimization, site structure, use of relevant keywords and link building.
3. Social media marketing: Creation and management of presence in social networks, such as Facebook, Instagram, Twitter, LinkedIn, among others. This may involve developing content strategies, paid advertising, engaging with users and analyzing performance.
4. Online advertising: Creation and management of digital advertising campaigns, such as paid ads in search engines (Google Ads), display networks, programmatic media and social media. This can include audience segmentation, creating compelling ads and monitoring results.
5. Content Marketing: Creation and promotion of relevant and valuable content such as articles, blogs, videos, infographics and e-books. The goal is to attract, engage and convert the target audience into customers by providing useful and interesting information.
6. Email marketing: Development and implementation of email marketing strategies to reach and engage customers. This can include building email lists, automating campaigns, targeting audiences and measuring results.
7. Data analysis: Collection and analysis of data related to the performance of digital marketing campaigns. This may involve using web analytics tools such as Google Analytics to track important metrics such as website traffic, conversion rate, social media engagement and return on investment.

These are just some of the main services offered by a company digital marketing industry. The ultimate goal is to help businesses achieve their online marketing goals, increase their visibility, attract more customers and drive business growth.

Therefore, every company that calls itself a digital marketing company or a digital marketing agency can have these services, or just a few, it's very natural see companies if specializing in some niches and not serving others.