Digital Marketing: interview questions and learning guide

SEO and website traffic

A shop on a busy street is easy to find. A website needs the same: clear signs so search engines show it to the right people.

Search engine optimisation (SEO) helps pages appear when people search. On page SEO covers titles, headings, content that answers the search, and clear links. Technical SEO covers speed, mobile friendly pages, safe https and a sitemap so crawlers can read the site. Off page SEO is mainly links from trusted sites. Keyword research finds what people actually type. Results take weeks, not days, and honest content beats tricks.

Interview tip: Prepare one real example: a keyword you chose, what you changed and the traffic change in Search Console.

Paid ads: Google and Meta

Paid ads are renting a billboard where you pick the exact people who walk past, and you pay only when they look.

Pay per click (PPC) ads on Google appear for searches and cost money per click. Meta ads on Facebook and Instagram show to chosen audiences by age, place and interest. A campaign has a goal, budget, audience, ad copy and a landing page. Key numbers are impressions, click through rate (CTR), cost per click (CPC), conversion rate and return on ad spend (ROAS). Test two versions of an ad, stop what does not work and keep the budget safe. Ads must follow platform rules and tell the truth.

Interview tip: Know the funnel numbers: CTR, CPC, conversion rate and ROAS, and say which one you would fix first and why.

Social media and content

A good social page is like a good tea stall: regular, friendly and people come back because they feel known.

Social media marketing builds a brand and a community. Pick platforms where your customers are: LinkedIn for business buyers, Instagram and YouTube for consumers. Plan a content calendar with a mix of useful, entertaining and promotional posts. Write short clear copy with one call to action. Reply to comments quickly, watch engagement rate and reach, and learn from the best posts. Influencer partners must be disclosed honestly. Handle complaints politely and in public first, then move to private chat.

Interview tip: Bring a mini content calendar for a business you know, with post ideas and one goal per post.

Email, WhatsApp and lead nurturing

A lead is a person who said hello. Nurturing is keeping the conversation going without becoming annoying.

Email and WhatsApp messages reach people who already know you. Build a list with permission, group people by interest (segmentation), and send useful messages on a schedule. A drip campaign sends a planned series, such as welcome, tips and offer. Track open rate, click rate and unsubscribes. Always give an easy way to opt out and follow Indian rules on consent and spam. A CRM stores leads and their stage so sales follows up on time. Short subject lines and one goal per message work best.

Interview tip: Prepare how you would build a welcome series and which numbers show it works.

Analytics and reporting

A campaign without numbers is a guess. Analytics turns a guess into a decision.

Marketing analytics tells you what works. Google Analytics shows visitors, sources and actions. UTM tags added to links show which campaign sent each visitor. Conversion tracking counts what matters, such as forms, calls or purchases. A funnel shows where people drop off. A simple report has the goal, three or four key numbers, what changed, why, and the next step. Avoid vanity numbers like likes that do not link to business results. Respect privacy and consent when tracking.

Interview tip: Be ready to read a small report: pick the two most important numbers and say what action follows.

Marketing strategy and brand

Before choosing any tool, decide who you want to reach and what you want them to do.

A marketing strategy starts with the goal, then the audience and the message. Segmentation, targeting and positioning (STP) pick who to serve and how to stand apart. The 4Ps are product, price, place and promotion. A customer persona describes a typical buyer with needs and fears. Competitor analysis shows gaps you can fill. Split the budget between channels, run small tests and move money to what works. Brand is the promise people remember, so be consistent and honest.

Interview tip: Prepare to explain a plan for a small business in one page: goal, audience, channels, budget and how you will measure it.

SEO earns unpaid traffic from search results. SEM includes paid search ads. Many teams use both.

CTR is clicks divided by impressions. It shows how attractive an ad or result is to the people who see it.

Improve ad relevance and landing page quality, add negative keywords, refine the audience and test copy.

A conversion is a visitor completing a goal such as a purchase, form, call or sign up.

A page built for one goal. It has a clear headline, benefit, proof, a simple form and a strong call to action.

Keywords are words people search. Choose them by intent, volume, competition and relevance to your service.

A backlink is a link from another site. Links from trusted, relevant sites tell search engines your content is useful.

Organic reach is unpaid visibility. Paid reach comes from advertising spend.

Set goals, list themes, choose formats and platforms, schedule dates, assign owners and review results monthly.

Interactions such as likes, comments and shares divided by reach or followers, showing how much people care.

Showing ads to people who already visited your site or app so they come back and finish an action.

Showing two versions of one thing, such as a headline, to similar audiences and keeping the better one.

The journey from awareness to interest, consideration, purchase and loyalty. Each stage needs different content.

ROI is profit from marketing minus its cost, divided by cost. It shows if spending was worth it.

The share of visitors who leave after viewing one page. A high rate may mean the page did not match their need.

Offer something useful for a sign up, ask for consent, keep forms short and never buy lists.

Tags in a link that identify source, medium and campaign so analytics can attribute visits correctly.

Pause scheduled posts, check the facts, reply quickly and honestly, fix the problem and learn from it.

The place a brand wants in customers' minds compared to competitors, based on a clear benefit.

Product, price, place and promotion are the main choices in a marketing mix.

The total profit expected from a customer during their relationship with the business.

Paying creators to reach their audience. Risks are poor fit, fake followers and missing disclosure of paid posts.

Giving leads points for actions and details so sales can focus on those most likely to buy.

Set up a Google Business Profile, ask for reviews, run a small local ad test and share useful posts. Track enquiries and keep what works.

Start from goals and past data, test small, measure cost per customer and move money to what works.

Keep strategy and data in house, use agencies for peaks and craft, and set clear KPIs for each.

Use tracking, attribution, controlled tests and shared reports with sales.

Pause campaigns, check facts, respond honestly, fix the issue and learn.

Define audience and message, pick channels, set a budget and timeline, and track launch metrics.

Agree lead definitions, share dashboards, review pipeline together and give feedback loops.

Focus on one audience, create useful content, use partnerships and referrals and test cheaply.