# Corex360 Blog | CRM, ERP, Attendance and PBX Guides

> Guides on CRM, quotes, ERP, attendance, leave, PBX, WhatsApp and business intelligence. Each starts from a working day and covers the idea and the practice.

Source: https://www.corex360.com/en/blog
Last updated: 2026-09-29

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# Questions from the field, clear answers.

The Corex360 blog is the collection of guides that answer the questions managers ask on digitalisation, business intelligence, automation, attendance and CRM. Every article starts with a problem and ends with the answer.

Go to the articles

## All articles

The guides on the blog cover CRM, ERP, time and attendance, business intelligence, automation and WhatsApp through the everyday work of a small business. Every article starts with a problem, defines the concept, answers the choice and migration questions, and sets out in a section of its own what Corex360 does in that work. The list shows each article's topic tag and publishing date.

If you are preparing to choose software, the seven guides and their shared criteria sit together on the [business software selection guides](https://www.corex360.com/en/blog/software-selection-guides) page.

CRM Quotes Customer tracking ERP Cloud PBX Messaging Email Field HR Accounting Business intelligence Assistant On-premise Security Projects Documents Industry CRM & ERP Digitalisation Regulation Automation HR & Attendance

- [CRM What is CRM? What an SME sales team expects from it CRM is software that keeps the customer relationship on one record. In an SME sales day, the customer card, opportunities, quotes, and follow-up work together. Date 23 September 2026 Read the article 01](https://www.corex360.com/en/blog/what-is-crm)

- [CRM How to choose a CRM: cloud, own server, one core Choosing a CRM starts with where you lose customers, not a feature list. A feature you never try with your own card in the demo will not help after setup. Date 23 September 2026 Read the article 02](https://www.corex360.com/en/blog/how-to-choose-crm)

- [Quotes How to prepare a quote: a quote flow that does not get lost A quote takes more than a price: scope, validity, approval, and revisions belong on one record. That way the quote holds from question to contract. Date 23 September 2026 Read the article 03](https://www.corex360.com/en/blog/how-to-prepare-a-quote)

- [Quotes What is quote follow-up, and why do quotes go unanswered Quote follow-up means chasing the answer to a quote you sent. When the reminder is nobody's job, the quote goes cold; on the record, follow-up has an owner. Date 23 September 2026 Read the article 04](https://www.corex360.com/en/blog/quote-follow-up)

- [Customer tracking How to track customers: what belongs on the card Customer tracking means the conversation and next step sit on the customer card. If customers leave with the salesperson, tracking lived in one person. Date 23 September 2026 Read the article 05](https://www.corex360.com/en/blog/customer-tracking)

- [Customer tracking Is the account card the same as the customer card The account card follows the money; the customer card follows the relationship. Kept apart, one customer lives twice, and sales and accounting search twice. Date 23 September 2026 Read the article 06](https://www.corex360.com/en/blog/account-card-vs-customer-card)

- [ERP What is ERP? What it does and does not do for a small business ERP is software that keeps purchasing, stock, invoicing, and payroll records in one database. In a small business it stops double entry, but not every problem. Date 23 September 2026 Read the article 07](https://www.corex360.com/en/blog/what-is-erp)

- [ERP Inventory management software versus ERP: where the difference lies Inventory software tracks what comes in, goes out, and remains; ERP ties each movement to orders, invoices, and cost. A few signs show which one you need. Date 23 September 2026 Read the article 08](https://www.corex360.com/en/blog/inventory-software-vs-erp)

- [Cloud PBX What is a cloud PBX, and is it different from a virtual PBX? A cloud PBX runs the company phone system on the provider's servers instead of an office box. It differs from a virtual PBX, which changes what you ask. Date 23 September 2026 Read the article 09](https://www.corex360.com/en/blog/what-is-cloud-pbx)

- [Cloud PBX How a caller is matched to the customer card: linking the phone to customer records PBX and CRM integration matches the caller's number to a customer card and logs the call. An unmatched number and a missed call each need an owner as well. Date 23 September 2026 Read the article 010](https://www.corex360.com/en/blog/pbx-crm-integration)

- [Messaging What is the WhatsApp Business API, and how do you connect a business number? The WhatsApp Business API lets messages flow through software instead of the phone app. Connecting a number and template rules work differently from the app. Date 23 September 2026 Read the article 011](https://www.corex360.com/en/blog/what-is-whatsapp-business-api)

- [Messaging WhatsApp for teams: how several people write from one number WhatsApp for teams means several people answering one business number from a shared inbox. Each message gets an owner, and unanswered ones come forward. Date 23 September 2026 Read the article 012](https://www.corex360.com/en/blog/whatsapp-for-teams)

- [Email What is a shared mailbox, and how it differs from a personal one A shared mailbox is the team's memory; a personal one is one employee's. Mail sent to sales@ needs an owner, and the record changes what happens next. Date 23 September 2026 Read the article 013](https://www.corex360.com/en/blog/shared-mailbox)

- [Field What is a route plan? Route planning for sales reps and the order of field visits A route plan shows which customer a field rep visits on which day and in what order. It is not the same as a route, and it too often stays on paper. Date 23 September 2026 Read the article 014](https://www.corex360.com/en/blog/what-is-a-route-plan)

- [Field What is field sales automation, and how it differs from mobile CRM Field sales automation keeps a rep's day on one record, from plan to report; mobile CRM carries the record to the phone. Which one fits depends on the team. Date 23 September 2026 Read the article 015](https://www.corex360.com/en/blog/field-sales-automation)

- [Field How to manage a field service team: work orders, routes, and reports A field service team runs on jobs opened with a work order, assigned to the right person, and closed with a photo report, from morning job to upkeep. Date 23 September 2026 Read the article 016](https://www.corex360.com/en/blog/field-service-management)

- [HR What is time and attendance? How clock-in data reaches leave and payroll Time and attendance records clock-in and clock-out times and feeds leave, overtime, and payroll. That data falls under KVKK (Turkish data law). Date 23 September 2026 Read the article 017](https://www.corex360.com/en/blog/what-is-time-attendance)

- [HR How to track leave and prevent calendar clashes Leave tracking keeps requests, approvals, balances, and the team calendar together. Two engineers should not book the same week, and leave ties to attendance. Date 23 September 2026 Read the article 018](https://www.corex360.com/en/blog/leave-tracking)

- [HR How to make a performance review fair: let the score come from the work In a fair performance review the score comes from the record and the rule is known in advance. Rules written down early keep the review meeting calm. Date 23 September 2026 Read the article 019](https://www.corex360.com/en/blog/fair-performance-review)

- [Accounting What is bookkeeping, and where does it part ways with ERP? Bookkeeping records daily trade, from invoices to the till, before it reaches the official accounts. It differs from formal accounting and from ERP. Date 23 September 2026 Read the article 020](https://www.corex360.com/en/blog/what-is-bookkeeping)

- [Accounting Collections tracking: how an overdue receivable becomes visible Collections tracking follows due dates and open balances by customer. If an overdue receivable never reaches the sales screen, nobody makes the call. Date 23 September 2026 Read the article 021](https://www.corex360.com/en/blog/collections-tracking)

- [Business intelligence What is a KPI dashboard? The first screen a manager opens in the morning A KPI dashboard shows where a company stands against its goals, with thresholds and owners on one screen. Many get ignored over time, for reasons you can avoid. Date 23 September 2026 Read the article 022](https://www.corex360.com/en/blog/what-is-a-kpi-dashboard)

- [Business intelligence Management report or decision screen: where the Excel report stops A management report sums up a period for whoever decides; an Excel report freezes the moment it is made. Excel still does some of those jobs well. Date 23 September 2026 Read the article 023](https://www.corex360.com/en/blog/management-report-beyond-excel)

- [Assistant What an AI assistant in a CRM does, and what it does not An AI assistant in a CRM reads, summarises, drafts, and follows up; the decision stays with you. Ask about the risk of wrong answers before you choose one. Date 23 September 2026 Read the article 024](https://www.corex360.com/en/blog/ai-assistant-in-crm)

- [Assistant What is a rule engine in business processes: reminders, assignment, approval A rule engine turns work held in memory into a written rule: trigger, condition, action. In a sales office, some work fits a rule and approval stays. Date 23 September 2026 Read the article 025](https://www.corex360.com/en/blog/what-is-a-rule-engine)

- [On-premise What is on-premise CRM? What keeping data in-house really means On-premise CRM runs on the company's own server. Setup and updates then need a named owner, and security does not come by itself with the hardware. Date 23 September 2026 Read the article 026](https://www.corex360.com/en/blog/what-is-on-premise-crm)

- [Security Cloud or own server under KVKK: where does the data live Under KVKK (Turkish data law), cloud versus own server is less about location than about who processes and accesses data. That shapes what you ask. Date 23 September 2026 Read the article 027](https://www.corex360.com/en/blog/kvkk-cloud-vs-own-server)

- [Projects What is project management software: opening the project when the quote is accepted Project management software keeps steps, owners, and delivery dates in one place. Work often breaks the day a quote is accepted and moves to operations. Date 23 September 2026 Read the article 028](https://www.corex360.com/en/blog/what-is-project-management-software)

- [Documents What is a document management system? Tying files to the customer record A document management system stores files, makes them findable, and ties access to permission. A shared folder falls short once files belong to customers. Date 23 September 2026 Read the article 029](https://www.corex360.com/en/blog/what-is-document-management)

- [ERP What is ecommerce ERP integration: how an order comes off stock Ecommerce ERP integration carries orders into the ERP and stock and prices to the store. Without it, an overnight order does not come off stock on time. Date 23 September 2026 Read the article 030](https://www.corex360.com/en/blog/ecommerce-erp-integration)

- [Industry CRM for construction companies: quotes, sites, and interim payments on one record A CRM for a construction firm keeps a job's trail on one record, from survey and quote to contract, site, and interim payments, so no note gets lost. Date 23 September 2026 Read the article 031](https://www.corex360.com/en/blog/crm-for-construction)

- [Industry How to set up quote and project tracking in an architecture practice Project tracking in an architecture practice keeps scope, stages, revisions, and files on one job record, so the order no longer lives in one person's memory. Date 23 September 2026 Read the article 032](https://www.corex360.com/en/blog/architecture-practice-tracking)

- [Industry How pool and spa companies track after-sales service Pool and spa firms track after-sales service by keeping equipment, warranty, maintenance contract, and fault history on the customer record after handover. Date 23 September 2026 Read the article 033](https://www.corex360.com/en/blog/pool-spa-service-tracking)

- [Industry Dealer network management: how a dealer's request reaches head office Dealer network management runs requests, quotes, orders, prices, and support between head office and dealers on one record, so no request drops out of sight. Date 23 September 2026 Read the article 034](https://www.corex360.com/en/blog/dealer-network-management)

- [Industry Customer tracking in showroom sales: from visit to quote Customer tracking in showroom sales keeps the talk that starts in the store going on one record after the visitor leaves, so a hesitant buyer is not lost. Date 23 September 2026 Read the article 035](https://www.corex360.com/en/blog/showroom-customer-tracking)

- [Industry Service business software: appointments, work orders, and collections in one flow Service business software ties the appointment to the work order, the invoice, and the collection on one customer record, so no link is left in a notebook. Date 23 September 2026 Read the article 036](https://www.corex360.com/en/blog/service-business-software)

- [Quotes How to choose quote tracking software: the criteria behind the decision Choosing quote tracking software comes down to seeing where quotes get lost after sending. The right option depends on the team, and a demo test shows it. Date 23 September 2026 Read the article 037](https://www.corex360.com/en/blog/how-to-choose-quote-tracking-software)

- [HR How to choose a time and attendance system: look at the record before the device Choosing time and attendance: card, PIN, or phone comes after the month-end desk. KVKK (Turkish data law) and how your workplace runs decide the rest. Date 23 September 2026 Read the article 038](https://www.corex360.com/en/blog/how-to-choose-time-attendance)

- [Cloud PBX How to choose a cloud PBX: lines, features, and the customer record Choosing a cloud PBX means reading the offer beyond lines and minutes. Draw your call flow first, use the trial period well, and read the exit terms. Date 23 September 2026 Read the article 039](https://www.corex360.com/en/blog/how-to-choose-cloud-pbx)

- [Accounting How to choose bookkeeping software: invoices, accounts, and the link to sales When choosing bookkeeping software, weigh e-invoicing, customer accounts, cash and bank, data sharing with your accountant, and the link to sales. Date 25 September 2026 Read the article 040](https://www.corex360.com/en/blog/how-to-choose-bookkeeping-software)

- [Projects How to choose project management software: deciding by the kind of work Project management software is chosen by the kind of work: an agency, a building site, and a software team weigh different criteria, and a demo settles it. Date 25 September 2026 Read the article 041](https://www.corex360.com/en/blog/how-to-choose-project-management-software)

- [CRM What drives CRM cost: the decisions behind the price table CRM cost is shaped by users, module scope, hosting, data migration, integrations, setup, and training. Ask the vendor about each of these items separately. Date 23 September 2026 Read the article 042](https://www.corex360.com/en/blog/what-drives-crm-cost)

- [CRM Customer tracking in Excel or a CRM: which one, and when When is Excel enough for tracking customers, and when is it time for a CRM? Weigh the criteria, see the limits of each, and spot the signs early. Date 24 September 2026 Read the article 043](https://www.corex360.com/en/blog/excel-or-crm)

- [Messaging WhatsApp Business app or API: which one suits you The WhatsApp Business app suits a number one person looks after, the API a number a team shares; the time to move comes before your busiest season begins. Date 25 September 2026 Read the article 044](https://www.corex360.com/en/blog/whatsapp-business-app-or-api)

- [CRM & ERP All-in-one business software or separate tools Integrated business software keeps work on one record and separate tools bring their own depth; the load of hand-carried information decides the choice. Date 24 September 2026 Read the article 045](https://www.corex360.com/en/blog/integrated-or-separate-tools)

- [HR Leave tracking: paper forms or a digital flow A paper leave form works for a team in one building with one approver. Once the team spreads out, it is time to move leave to a digital flow. Date 23 September 2026 Read the article 046](https://www.corex360.com/en/blog/leave-tracking-paper-or-digital)

- [CRM CRM migration checklist: moving from Excel step by step How do you move an Excel customer list into a CRM? Map the columns, remove duplicates, fix phone formats, assign owners, and retire the old file last. Date 24 September 2026 Read the article 047](https://www.corex360.com/en/blog/crm-migration-checklist)

- [CRM CRM data migration: exporting, mapping fields, and running both systems for a while Switching CRM means taking a full export from the old system, mapping its fields to the new one, and running both side by side for a short, planned period. Date 25 September 2026 Read the article 048](https://www.corex360.com/en/blog/switching-crm-moving-your-data)

- [CRM How to track sales: from opportunity to quote, and from quote to contract Sales tracking keeps each opportunity's source, stage, and next step on record. What the card holds, how to spot a stalled deal, and why losses are logged. Date 24 September 2026 Read the article 049](https://www.corex360.com/en/blog/how-to-track-sales)

- [Email What is CRM email integration: how correspondence links to the customer record CRM email integration links correspondence to customer and opportunity records. Connection methods, address matching, emails to keep out, and access. Date 24 September 2026 Read the article 050](https://www.corex360.com/en/blog/what-is-crm-email-integration)

- [ERP What drives ERP cost: the items behind the quote ERP cost comes from the licence model, user and module scope, hosting, data migration, integration, training, and maintenance. Compare quotes item by item. Date 24 September 2026 Read the article 051](https://www.corex360.com/en/blog/what-drives-erp-cost)

- [HR What is a personnel file, and how do you keep one digitally A personnel file is the record an employer keeps for each employee. The documents it holds, health data, access rights, and rules for keeping it digitally. Date 25 September 2026 Read the article 052](https://www.corex360.com/en/blog/what-is-a-personnel-file)

- [Documents How to keep a contract archive (contract repository): signed documents, dates, and access A contract archive stores the signed contract, annexes, and dates with logged access. Wet and e-signatures, file naming, notice dates, and access. Date 25 September 2026 Read the article 053](https://www.corex360.com/en/blog/how-to-keep-a-contract-archive)

- [Messaging How to manage Instagram DMs as a team: inbox, assignment, and record Instagram DM management gathers business messages in a shared inbox, assigns an owner, and links them to the customer record. Account type and requests. Date 24 September 2026 Read the article 054](https://www.corex360.com/en/blog/managing-instagram-dms-as-a-team)

- [HR How to calculate overtime: hours, pay, and time off in lieu Overtime is calculated by finding the hours above the weekly limit and paying them at the higher rate or as time off. Thresholds, rates, consent, limits. Date 25 September 2026 Read the article 055](https://www.corex360.com/en/blog/how-to-calculate-overtime)

- [Projects Are task tracking and project management the same thing: where the difference begins Task tracking follows single jobs; project management follows linked jobs towards one delivery. Which you need, what a delay does, and how tasks join a project. Date 25 September 2026 Read the article 056](https://www.corex360.com/en/blog/task-tracking-vs-project-management)

- [ERP How to choose ERP software: scope, data, and deployment Choosing ERP software starts with the data you type twice today. Module scope, cloud or own server, accounting set-up, data migration, and the demo. Date 25 September 2026 Read the article 057](https://www.corex360.com/en/blog/how-to-choose-erp-software)

- [CRM What is lead scoring: which prospect to call back first Lead scoring rates prospects against your own criteria and ranks whom to call back first. The criteria, building a model, common errors, and data law. Date 28 September 2026 Read the article 058](https://www.corex360.com/en/blog/what-is-lead-scoring)

- [Quotes How to manage quote revisions: which version is valid A quote revision changes the price, scope, or terms of a sent quote and sends it as a new version. Version naming, approval, the old quote, and common errors. Date 28 September 2026 Read the article 059](https://www.corex360.com/en/blog/how-to-manage-quote-revisions)

- [Cloud PBX Call centre vs PBX: what each one solves A PBX runs the lines and extensions; a call centre answers and records calls as team work. A comparison table, which one you need, and outbound call rules. Date 28 September 2026 Read the article 060](https://www.corex360.com/en/blog/call-centre-vs-pbx)

- [CRM What is mobile CRM, and what should the phone in the field show Mobile CRM opens the customer card, tasks, and approvals on a phone, so the field sees the office record. What to show, app or site, offline, and security. Date 28 September 2026 Read the article 061](https://www.corex360.com/en/blog/what-is-mobile-crm)

- [Quotes Preparing quotes with AI: the machine drafts, you decide Preparing quotes with AI means drafting from the record and leaving price, discount, and sending to human approval. What it does, what it does not, what data. Date 28 September 2026 Read the article 062](https://www.corex360.com/en/blog/preparing-quotes-with-ai)

- [Digitalisation Buying business software with KOSGEB digital transformation support: who qualifies, what it asks KOSGEB digital transformation support covers loan interest for small and medium manufacturers buying software and machinery. Criteria, report, steps, mistakes. Date 28 September 2026 Read the article 063](https://www.corex360.com/en/blog/kosgeb-digital-transformation-support)

- [Regulation Business regulation timeline: when KVKK, e-invoicing, İYS, and KEP began in Turkey When did KVKK, e-invoicing, e-archive, e-ledger, İYS, VERBİS, KEP, and e-notification start? Gazette and effective dates in one table, with official links. Date 28 September 2026 Read the article 064](https://www.corex360.com/en/blog/turkish-business-regulation-timeline)

- [Digitalisation Digitalisation in SMEs: where to start, why it stalls Digitalisation in SMEs means moving work records out of Excel, WhatsApp, and folders into one shared order. Why attempts stall, and which job to start with. Date 23 September 2026 Read the article 065](https://www.corex360.com/en/blog/sme-digitalisation)

- [Business intelligence What is business intelligence, and how does it differ from reports and KPI dashboards? Business intelligence links scattered records and brings forward what needs a decision. Its parts, how it relates to reports and KPI dashboards, and its uses. Date 22 September 2026 Read the article 066](https://www.corex360.com/en/blog/what-is-business-intelligence)

- [Automation Automating company processes with AI: where to start? AI automation starts with the job that repeats most: quote follow-up, contract renewal, leave approval. Which work an assistant runs alone, where it asks you. Date 22 September 2026 Read the article 067](https://www.corex360.com/en/blog/ai-automation-where-to-start)

- [HR & Attendance Attendance problems: late arrivals, missing records, and leave clashes Most attendance problems come from clock-in records kept apart from tasks and leave. The root causes of late arrivals, missing records, and leave clashes. Date 22 September 2026 Read the article 068](https://www.corex360.com/en/blog/attendance-problems)

- [CRM & ERP CRM vs ERP: the difference and what one platform means CRM manages the customer relationship, ERP the company's resources. Kept apart, the record is entered twice; the difference in a table, a scene, and one core. Date 22 September 2026 Read the article 069](https://www.corex360.com/en/blog/crm-vs-erp)

- [Messaging How WhatsApp conversations land on the customer card WhatsApp CRM means the price question, the emailed quote, and the phone approval meet on one customer card. How number matching works and chats stay visible. Date 22 September 2026 Read the article 070](https://www.corex360.com/en/blog/whatsapp-crm)

About this blog

## Who writes these articles?

The articles on the Corex360 Blog are published under the name of Şevket Erer, co-founder of Corex360 and an AI specialist, who writes about the place of CRM, ERP, and AI in business processes. Each article starts with a business problem; AI tools are used for drafts and translation, and the articles make no numerical claims such as customer counts or percentages. You can read how we write in our [editorial principles](https://www.corex360.com/en/about#yayin-ilkeleri).

[Modules What each module does and how they meet on one core.](https://www.corex360.com/en/modules)[Solutions A working day with Corex360, by your role or your need.](https://www.corex360.com/en/solutions)[FAQ Questions on setup, channels, HR, mobile, and security, by topic.](https://www.corex360.com/en/faq)[Glossary Short definitions of CRM, ERP, attendance, and PBX terms.](https://www.corex360.com/en/glossary)

## Sources

- [Personal Data Protection Law (mevzuat.gov.tr)](https://www.mevzuat.gov.tr/mevzuat?MevzuatNo=6698&MevzuatTur=1&MevzuatTertip=5) Last checked 25 September 2026
- [Legislation Information System, Labour Law No. 4857 (current text)](https://www.mevzuat.gov.tr/mevzuat?MevzuatNo=4857&MevzuatTur=1&MevzuatTertip=5) Last checked 25 September 2026
- [Meta for Developers, WhatsApp Business Platform](https://developers.facebook.com/documentation/business-messaging/whatsapp/overview) Last checked 25 September 2026

Resources

## Related pages

[Annual leave calculator Work out annual leave under Turkish Labour Law Art. 53.](https://www.corex360.com/en/annual-leave-calculator)[Labour law reference table Leave, working hours and overtime rules with article and source.](https://www.corex360.com/en/turkish-labour-law-table)[Quote template A free quote template you fill in in your browser, no sign-up.](https://www.corex360.com/en/quote-template)[Decision file What is in the product today, section by section for management, sales, finance and IT.](https://www.corex360.com/en/decision-file)[Quote win rate calculator Win rate by two definitions and funnel step conversion.](https://www.corex360.com/en/quote-win-rate-calculator)[Public holidays 2026 A file for your calendar and a return-to-work date calculator.](https://www.corex360.com/en/public-holidays-turkey)