Okay, I need to create a professional wiki-style document about CRM under the given categories. Let me start by understanding the requirements.

First, the structure needs an H1 title, an overview section, several H2 and H3 sections, and maybe references or related documents. The content should be accurate, detailed, easy to read, with some technical terms explained. Also, it has to be over 800 characters, so I need enough depth.

Starting with the title: "CRM" as the main heading. Then an overview section explaining what CRM is, its purpose, and maybe a brief history. Next, sections on key features, components, benefits, challenges, and examples. Each of these can be H2 headings. Under each, I can add H3 for subtopics.

For the key features, things like contact management, sales automation, marketing automation, customer service tools, analytics. Components might include software modules, data integration, user roles. Benefits could cover efficiency, customer satisfaction, data-driven decisions. Challenges might involve implementation costs, data security, user adoption. Examples can list popular CRM systems like Salesforce, HubSpot, Zoho.

I need to make sure each section is detailed but not too technical. Use bullet points or lists where possible. Maybe include a table comparing different CRMs if that's helpful. Also, check for any technical terms that need explanation, like "data integration" or "sales automation."

Wait, the user mentioned using code blocks for technical content, but CRM isn't really code-heavy. Maybe not necessary here. However, if I mention APIs or integrations, perhaps a code example? Not sure. Maybe skip unless needed.

Also, ensure that each section flows logically. Start with an overview, then break down into components, benefits, challenges, and examples. Add references at the end, maybe some links to official sites or articles.

Check for accuracy: CRM stands for Customer Relationship Management. It's a strategy and software for managing interactions with customers. Key features as mentioned. Benefits like improved efficiency, better customer insights. Challenges like implementation complexity.

Make sure the language is clear and concise. Avoid jargon without explanation. Keep paragraphs short. Use bold or italics for emphasis where needed but not overdo it.

Now, structure the markdown:

CRM

개요/소개

• Definition of CRM
• Purpose and importance
• Brief history (maybe from 1980s to now)

주요 기능 및 구성 요소

연락처 관리

• Storing customer data
• Contact details, communication history

판매 자동화

• Sales pipeline management
• Opportunity tracking

마케팅 자동화

• Campaign management
• Lead generation

고객 지원 도구

• Ticketing systems
• Live chat, FAQs

분석 및 보고

• Data analytics
• Reporting tools

이점

• Increased efficiency
• Enhanced customer satisfaction
• Better decision-making

도전 과제

• Implementation costs
• Data security
• User adoption

예시 및 사례 연구

• Salesforce, HubSpot, Zoho CRM
• Case study: Company X improved sales by 30% using CRM

참고 자료

• Links to official sites, articles, studies

Now check the length. Each section needs enough detail. Maybe expand each subsection with more points. For example, under components, explain each module in a bit more depth. Under challenges, elaborate on why data security is a concern.

Also, ensure that technical terms are explained. For instance, when mentioning "sales pipeline management," briefly explain what it means.

Avoid repetition. Make sure each section adds value. Use examples to illustrate points where possible.

I think this structure should meet the requirements. Now write the actual markdown with proper formatting.