Anyone here have cases related to the TMT industry that I can practice too? 

Questions about market size are frequently asked in case interviews in consulting because they require a blend of logic, mathematics, and common sense. They can be asked as standalone questions or as part of a larger case. Applicants who are familiar with market sizing questions can really perform here. What Are Market Sizing Cases?If you're applying to top consulting firms like McKinsey, BCG, or Bain, you're unlikely to escape a market estimation case. Market sizing cases are considered "back-of-the-envelope" calculations because they can be done on the back of an envelope. Despite the name, it's not just about estimating market sizes; other estimations may also be asked for.For example, if you're discussing a British clothing retailer's growth strategy, you could calculate on an envelope how large the online clothing market is and what percentage of the market the retailer already penetrates. If you perform these calculations quickly, the conversation with the client stays fluid, leaving a good impression.You can receive the question about market size as a standalone case (although this is less common) or as part of a more comprehensive problem, such as market entry. The good news: There's no right or wrong answer when it comes to the question of market size. The interviewer is less concerned about the specific number you come up with for the market than the approach you took to arrive at that number. Why Are Market Sizing Cases Commonly Used in Consulting Interviews?Market Sizing Cases are used to test your quantitative and logical abilities. The interviewer wants to ascertain whether you work well with numbers and if you can make informed assumptions and deal with ambiguities. Questions about market size aren't just about the size of markets; they also involve other types of estimations, such as the number of golf balls in a jumbo jet. As you may have noticed, math is crucial in tackling these questions since you don't have a calculator to rely on. Most importantly, you need to be comfortable dealing with large numbers like millions and billions as well as percentages. More on that later. How Do You Best Approach Market Sizing Cases?Now that we understand the theory behind Market Sizing Cases and their relevance to your case interview, let's take a closer look at the process.Segmentation – The Key to Market Sizing CasesIf you've done some reading on case interviews before delving into market sizing questions, you might have come across areas where segmentation is necessary. Segmenting data is a crucial skill you must master as both a candidate in a case interview and in your later career as a consultant. Segmentation generally refers to dividing a larger whole into smaller parts or segments. The principle you need to understand to do this correctly is the MECE principle.MECE stands for "mutually exclusive, collectively exhaustive." Simply put, segmenting a group of data according to the MECE principle means forming subgroups that do not overlap but collectively cover the entirety of the data, meaning no data is missing. An example useful for market sizing questions is dividing a country's population into age groups (as different age groups often behave differently).Below is a breakdown into Group 1 in the age range 0 to 14, Group 2 in the age range 15 to 64, and Group 3 for everyone over 65: Note that none of the groups overlap, so no age is counted twice, but also no age is overlooked. Now that the population is correctly segmented, we can treat each group differently. If we had divided the population of the United Kingdom into the aforementioned groups, we could estimate clothing expenditures per person in these groups in online retail. Common sense suggests that expenditures per person in the 0-14 age group are lower than in the 15-64 age group. We can justify this estimation by noting that the majority of 0-14-year-olds do not purchase their clothing online. 

The case interview is one of the most challenging parts of the application process for consulting jobs. But why do companies prefer this method over traditional interviews? The answer lies in the many benefits case interviews offer — not just for you as a candidate, but also for the companies themselves. Let’s first explore why case interviews can be valuable for you before taking a look at the perspective of consulting firms. The Benefits of Case Interviews for You as a CandidateA case interview is very different from traditional job interviews because it simulates real challenges from the day-to-day life of a consultant. It gives you direct insight into typical problems and the ways of thinking and working in consulting. At the same time, it helps you identify your strengths and weaknesses while showing how you handle stressful situations. You’ll get the chance to test your resilience, decision-making skills, and analytical thinking — all essential qualities, not just in consulting.Additionally, a case interview allows you to gain hands-on experience. You’ll learn to work efficiently under pressure, use resources effectively, and develop innovative solutions for complex problems. Even if you don’t pass the interview, you’ll often receive valuable feedback to help you prepare for future opportunities. In group case interviews, you also get to showcase your teamwork skills — an important factor for your success in consulting. How Companies Benefit from Case InterviewsCase interviews also offer a range of advantages for companies. They allow employers to assess candidates in realistic scenarios and pinpoint the skills that are crucial for the job. By using practical challenges, companies can thoroughly evaluate a candidate's suitability and ensure they meet the demands of day-to-day consulting work.Moreover, case interviews are an efficient and standardized method that makes the selection process more objective and streamlined. They enable companies to test the specific skills needed in consulting, helping them identify the most qualified candidates. At the same time, these demanding interviews enhance employer branding by showcasing the company as an attractive and professional workplace. They also provide candidates with valuable insights into the company’s work environment, potential projects, and industry focus areas. What Skills Are Tested in Case Interviews?In case interviews, consulting firms want to ensure you have the key skills needed for a successful career in consulting. These include:Problem-Solving Skills: How do you approach complex challenges?Analytical Thinking: Can you critically assess information and draw logical conclusions?Structured Thinking: Are your arguments clear, logical, and goal-oriented?Quantitative Skills: How comfortable are you with numbers and data and can you perform quantitative analyses?Communication Skills: Can you present your solutions clearly and persuasively?Creativity: Do you come up with innovative approaches to tackle unusual problems?This might sound like a lot, but you're already on the right path! With proper preparation and practice in presenting these skills effectively, you’ll lay a solid foundation for your consulting career. Key TakeawaysCase interviews are an essential part of the consulting industry. They’re a crucial element of the application process and bring benefits for both sides.For you as a candidate, they provide a first glimpse into the typical tasks of a consultant’s day-to-day work. They also give you the chance to showcase your skills directly during the interview. Additionally, case interviews help you identify your strengths and weaknesses. Even if things don’t work out, you’ll often receive valuable feedback to help you prepare for future interviews.For companies, case interviews are a vital tool for realistically assessing a candidate's abilities. They allow firms to check whether you have the right skills and can handle the demands of a consulting role. Overall, they provide an efficient and practical way to identify the best candidates.Case interviews are challenging, but they’re far from impossible to master — with the right preparation. Make use of our resources and take the first step toward your consulting career!