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What chatbots are, what they do, and where they're used

What chatbots are, what they do, and where they're used

Bots are a digital tool that can be used for good or for harm. We break down how genuinely useful chatbots work and which business problems they actually solve.

What is a chatbot?

A bot is a piece of software that runs automated tasks. Some help. Some attack.

Helpful bots automate work. Malicious ones hack accounts, distribute spam, and exfiltrate data. Industry estimates put automated traffic at roughly half of all internet activity — the bots that handle customer service, post on social media, crawl websites, and run optimization checks.

For B2B teams, the appeal is straightforward: bots execute repetitive work instantly, including at peak load, without burning headcount.

What are malicious bots?

Malicious bots hijack accounts, scrape contacts, distribute spam, and run other illegal operations. Operators hide their tracks by routing attacks through botnets — networks of internet-connected devices each running bots without the owner's knowledge.

The risk to companies and customers is real. Malicious bots steal personal data, log keystrokes, and capture passwords, card numbers, and account credentials at the point of entry. They are also hard to detect: many disguise themselves as standard system files and processes.

The main types to know:

  • Spam bot. Harvests email addresses from contact pages and guestbooks, then floods forums and comment sections with links.

  • Malicious chatbot. Common in dating apps. Mimics a real person well enough to extract personal details, including card numbers.

  • File-sharing bot. Replies to a user request with a fake download link that delivers malware.

  • Credential-stuffing bot. Tests known username and password pairs against login pages to take over accounts.

  • DoS and DDoS bots. Flood servers with traffic until websites and applications go offline.

  • E-commerce inventory bots. Add items to cart and never check out, creating fake stockouts that block real buyers.

  • Vulnerability scanners. Probe sites for weaknesses and report findings to the operator instead of the site owner — often resold to the victim.

  • Click-fraud bots. Generate fake clicks on paid ads, draining advertiser budgets. Detection requires dedicated tooling.

  • Traffic-monitoring bots. Overload mail servers as cover for large-scale data theft.

What are helpful bots?

Helpful bots cover a wide range of categories. The main ones below.

Chatbot

A bot that responds to user input with scripted or generated replies.

Chatbots run a wide range of commercial workflows. In sales, an AI agent recommends products, surfaces pricing, references prior orders, and processes payment. Lead-generation bots run qualification surveys and report results to marketing.
A chatbot can also navigate users through a website, surfacing the right page on demand instead of forcing a search.

Notification bots push promotions, discounts, and product updates on schedule. AI agents handle calendars, prepare reports, and coordinate team workflows.

In customer support, chatbots deflect repetitive questions around the clock and free agents for higher-value cases. Educational chatbots run drills for language learning and similar tasks. The category spans most front-line interactions.

Social bots

Bots that operate on social networks — auto-posting, amplifying messages, following users, or running fake accounts to inflate followers. Detection is hard because they mimic ordinary user behavior, and platform algorithms keep raising the bar.

Shopping bots

Price-comparison bots that find the best deals on groceries, clothing, or other categories. Some track on-site behavior to personalize recommendations.

Search engine crawlers

Spider bots. They index web content so search engines can match queries to pages.

Web scraper bots

Pull data from websites for offline use — full pages or specific fields like prices and product names. Some scrapers are malicious, violating terms of service to lift copyrighted material or confidential data.

Information-gathering bots

Knowbots. They collect data based on user-defined criteria by visiting target sites automatically.

Website monitoring bots

Track uptime and performance of websites and services. Downdetector.com, for example, aggregates outage data across major services.

Transactional bots

Execute transactions on a user's behalf inside a conversational flow.

Downloader bots

Automate software and app downloads. Used to inflate download counts in app stores or push new apps up the rankings. Also weaponized for DoS attacks against download infrastructure.

Ticket-buying bots

Automatically buy event tickets for resale. Illegal in many countries, and a problem for organizers, fans, and ticket sellers alike.

How chatbots work

Bots operate over a network. When they need to talk to each other, they use messaging protocols, internet relay chat, and similar transport layers.

A bot is a set of algorithms aimed at a specific task. Three architectures dominate chatbot design:

  • A rule-based chatbot follows scripts. It presents users with predefined options and routes them through a decision tree.

  • A self-learning chatbot uses machine learning on user input and matches against known keywords.

  • An AI chatbot combines rules with machine learning. It applies natural language processing, pattern matching, and natural language generation to understand and respond.


Each architecture has trade-offs. The right choice depends on use case. Pros, cons, and chatbot use cases below.

Pros and cons

Chatbots tighten customer communication. Users get answers immediately, without queueing for an agent. Staff time goes to higher-value work.

They also lift sales. An AI agent recommends the right product, walks customers through options, and remembers buyer preferences across sessions.

Chatbots cut cost-to-serve. Once deployed, a company handles more volume without adding headcount.

They run 24/7 — no breaks, no shifts, no fatigue — and execute tasks faster than a human agent. Order completion is one common example.

Chatbots automate routine traffic. Agents stop answering the same five questions and focus on complex cases.
Chatbots also qualify leads. They collect customer intent upfront so agents enter conversations already informed.

Net effect: faster response, lower load on staff, better margins on support.

Chatbot use cases

The most common chatbot use cases for B2B teams below.

Automating online support

Site visitors ask the same questions: products, pricing, billing, delivery, technical issues.

A chatbot resolves these without involving an agent. Done well, this cuts churn several times over and lifts loyalty. Chatbots also push notifications, surface discount offers, and collect personalized analytics.

The best deployments resolve up to 80% of inquiries instantly and absorb peak load — up to 10,000 inquiries per minute without quality degradation.

Collecting feedback

Email surveys hit a 10% open rate and 5% completion. Chatbots collect feedback inline, inside the chat — engagement and response rates rise sharply.

Order confirmation and delivery tracking

Customers used to look up a tracking number, open the carrier's website, and paste it into a form. A chatbot collapses that to a single message — status, ETA, change notifications, all delivered in conversation. Russian Post runs exactly this kind of bot for parcel tracking, FAQs, and delivery cost calculations.

Lead generation

A chatbot opens the conversation, collects intent, asks qualifying multiple-choice questions, and captures contact details. Qualified leads route to sales; the rest route to support. Sales reps stop chasing cold leads and close more deals.

Boosting sales

Chatbots drive sales with personalized recommendations, best-offer messages, loyalty perks, and discounts. Trainable bots ask buyers about preferences — clothing style, for example — and refine their recommendations over time. The bot builds a customer profile from interaction data and uses it to surface relevant products.

What chatbot builders are

Two ways to build a chatbot: code it from scratch, or use a builder. Coding requires an engineer or strong programming skills. A builder is faster — especially Lia.

Lia is an AI chatbot builder with native natural language processing. Plug Lia into your support stack to absorb peak load, deflect repetitive questions, cut error rates, and free agents for complex work. Ready-made templates train on your existing support history in two clicks.

Lia is in production across foodtech, e-commerce, online education, betting, banking, and taxi services. The platform launched in 2017 and ships continuous updates. Lia is registered in the Russian unified software registry and complies with Federal Law 152-FZ.

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