Digital Marketing Topics to learn in 2021

The word Digital Marketing has become super popular in India. Almost every small or big company is investing in digital marketing. At the same time, digital marketing is becoming a popular career for many freshers or graduates.

But the main problem is, most people are still not aware of the real meaning of digital marketing and various topics of digital marketing.

Students are getting confused while choosing the right digital marketing course and topics.

Digital marketing has multiple topics and digital marketing courses have multiple modules to choose from.

This article will help you understand various digital marketing topics and how to choose the right digital marketing course for your career.

To become successful in the digital marketing field, it’s important to know about various digital marketing topics and their meaning.

Digital Marketing Topics

Digital marketing is the combination of various marketing techniques and strategies. Digital marketing has multiple topics or subjects like, SEO, SEM, SMO, SMM, Lead Generation, Ecommerce, Google Ads, Facebook ads, etc.

It’s not always important to learn or master every subject, it’s important to master one of two skills to become successful in digital marketing.

Let’s understand and learn more about digital marketing topics and their meanings.

1. Search Engine Optimization

Search engine optimization is one of the most popular subjects in digital marketing. SEO is the core of digital marketing. SEO plays an important role in digital marketing. SEO helps in driving organic traffic and increase online visibility without paid advertising.

What is Search Engine Optimization?

Search Engine Optimization is about getting organic or free traffic on a website or blog from various search engines like Google, Yahoo, Bing, etc. Search Engine Optimization is one of the most complex topics in digital marketing.

You can learn SEO as part of a digital marketing course or as a separate topic. If you plan to make your career in SEO, I would recommend you learn SEO as a separate subject after completing your Digital Marketing Foundation course.

Why SEO is an Important topic in Digital Marketing?

As I told you in the beginning that SEO is a digital marketing channel, which is used for driving free traffic on the website. If you learn SEO, you will be able to drive free traffic, generate leads, increase sales without spending on paid advertising.

How difficult is SEO as a topic?

Well, SEO is not difficult to learn, it’s a bit complex and it contains multiple subjects like keyword research, on-page optimization, off-page optimization, link building, content writing, competition analysis, and using various tools.

Who should learn SEO?

If you are passionate about blogging and organic traffic, you must learn SEO & Google Ads. I would always recommend learning Advanced SEO as many digital marketing courses cover only basic SEO or SEO for beginners.
If you are serious about SEO and become an SEO expert, you must consider a digital marketing course with SEO specialization

2. SEM – Search Engine Marketing

Search Engine Marketing is the combination of SEO & Search Ads. It’s one of the most popular digital marketing topics after SEO.

As per various websites and blogs, SEM is about Google Ads. Well, it’s not true in 2021.

SEM is Search Engine Marketing which means, using Search Engines for marketing. In this topic, you will learn how to use paid advertising, search ads, and SEO to promote business or drive website traffic.

SEM is part of every digital marketing course available in India. Almost every course covers SEM as a core subject.

3. SMO – Social Media Optimization

SMO is known as Social Media Optimization. In this topic, you will learn how to optimize your social media properties like Facebook Profile, Instagram Profile, Facebook Page, LinkedIn profile, Twitter, and other social media channels.

Social Media optimization is part of the digital branding and social media marketing process which includes activities like

  • Adding proper Logo or Profile on Social media channels
  • Writing proper description on social media accounts and pages
  • Adding relevant information
  • Adding links to websites or blog
  • Checking social media content and optimizing
  • Increasing Facebook Page likes
  • Increasing Instagram Followers

Social Media Optimization is basically part of the social media marketing topic which we are going to discuss in detail.

Why SMO is important?

SMO is part of social media and online branding. Learning SMO topics will help you secure your job in the social media space. After learning Social Media, you can get a job as a social media executive, Social Media Specialist, Social Media Marketing Manager.

4. SMM – Social Media Marketing

Social media marketing or Social Media Management is generally known as SMM in digital marketing. SMM is another popular topic in digital marketing. SMM is mainly used by consumer brands, politicians, celebrities, and social media influencers to stay in touch with their audience.

Social Media marketing also includes social media advertising and managing social media ads.

Typically Social media marketing is used for brand building, customer engagement, and promoting offers and discounts.

Who should learn SMM (Social Media Marketing)?

If you are a creative person, having good knowledge and interest in designing, creatives, etc, then social media marketing is for you. You can learn social media marketing as part of a digital marketing course or you can also learn social media as a separate topic.

5. PPC – Pay Per Click Advertising

Pay Per Click Adverting or PPC is one of the most popular digital marketing topics. PPC advertising is growing very fast in India and demand for PPC experts is also growing very fast.

PPC is very easy to learn and you get well paid as a PPC expert. You can start your digital marketing career as a PPC expert and there are many jobs available in the PPC field.

What is PPC?

PPC is commonly known as pay-per-click advertising or Pay Per Cost marketing. Where advertisers will pay for every click or action. Its advertising model is used by many popular advertising platforms like Google Ads, Facebook Ads, LinkedIn, Twitter, Instagram, Taboola, etc.

PPC is part of every digital marketing course. Some courses offer PPC as just a basic topic, if you want to become a PPC expert in India, you must choose a digital marketing course with PPC specialization.

Basically, you should choose a digital marketing foundation course and then learn PPC as a separate topic for best results.

6. Blogging

Blogging is not directly related to digital marketing, but bogging is part of digital marketing strategy. Many people feel that blogging is mainly used for making only online or earning via affiliate marketing.

Actually, blogging can be used as part of digital marketing and SEO strategy to drive organic traffic, social media traffic and can also be used as part of content marketing strategy.

Blogging is a very easy topic and you can learn blogging with digital marketing or can also learn online.
You can consider blogging as a career if you are interested in content writing and blogging.

Blogging is not as a popular topic as it was a few years ago.

If you are planning to start your career in blogging, I would suggest you to learn blogging + SEO + Content marketing.

7. Email Marketing

Email marketing is the oldest internet marketing strategy still used in today’s digital marketing strategy. Email marketing is very easy to learn and implement.

Email marketing is included in every digital marketing course as a core subject.

Email marketing is mainly used for lead nurturing, content marketing, and promotion. Many companies use email marketing to promote offers, webinars, and blogs.

In email marketing, you will mainly learn how to use various email marketing tools like MailChimp and how to send emails to subscribers and managing subscribers.

8. Facebook Advertising

You can learn Facebook advertising as part of digital marketing or you can take an advanced Facebook Advertising course to master Facebook Ads.

Facebook advertising is one of the most powerful advertising platforms and Facebook ads are used by almost all brands and companies as part of their digital marketing.

In Facebook advertising, you will learn how to use Facebook Advertising for brand building, lead generation, and growing sales. You will learn how to create and manage a Facebook Ads campaign, how to use Images and videos for Facebook ads.

I always recommend learning and master Facebook advertising. You must know how to run Facebook advertising to start your career in Digital Marketing.

9. Google Analytics

Google Analytics is included in almost all digital marketing curriculum and its the must-have topic. Google Analytics is used to measure digital marketing performance, traffic, and goals.

Google Analytics can be integrated with Search Console and Google Ads to track campaign and SEO performance.

It’s important to learn and practice Google analytics to become successful in the DIgital Marketing space.

10. Content Marketing

Content marketing is a digital marketing strategy that is used for promoting content using SEO, paid media, social media, YouTube, and email marketing.

Content marketing is used mainly with other digital marketing strategies mainly for lead generation or leads nurturing.

11. Lead Generation

Lead generation is one of the important digital marketing topics. Lead generation is a concept of collecting contact information like email address, name, mobile, and phone numbers of people who are interested in our products or services.

Lead generation can be done using Google Ads, Social Media, Email marketing, SEO, Content marketing, video marketing, etc.

12. YouTube Marketing

YouTube marketing is becoming popular now in India and used by many companies, brands and individuals for business and brand promotion. YouTube marketing is all about creating YouTube channel and uploading videos to grow YouTube channel ad use YouTube as a medium to communicate with target audience.

13. Google Ads

Google Ads is my favorite digital marketing topic. Google ads is a powerful advertising platform that can be used for search ads, display ads, video ads, remarketing, lead generation, shopping ads, mobile app promotion, etc

Google ads is part of all digital marketing courses and you can also learn Google ads as a short course. You may also find advanced PPC and Advanced Google ads courses for digital marketing professionals.

Demand for Google Ads experts is growing in India and you can start your career in digital marketing with a Google ads specialists.


Often people try to learn everything in digital marketing. Practically it’s almost impossible to learn all digital marketing topics. You can master topics like Google Ads + Facebook Ads + Email marketing to start your career and then practice SEO and Google Analytics to further upgrade your knowledge and skills.

If you are interested in Social Media and Content writing, then Focus only on social media. No need to spend time on SEO or paid advertising as both are different subjects.



Bhavesh Gudhka

Bhavesh Gudhka is an entrepreneur, digital marketing consultant, trainer, author, and founder of Optron Academy. Bhavesh has more than 12 years of experience in IT, Web Development, Digital Marketing & SEO.

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