Subject area
Web Applications
Software that runs in a browser and does real work — dashboards, portals and systems staff use all day.
23 concepts in this area
Web Applications
A
Audit Trail The record a system keeps of who changed what and when, and the reason a careful one hides records instead of erasing them.B
Backend The part of a system you never see, where the records are kept and the rules are checked, and which a website and a phone app can share.C
Change Request Why the final bill rarely matches the first quote, and the practical ways to keep changes to a software project cheap. Cross-Platform App One system that opens in a browser, on an Android phone and on an iPhone, with all three reading and writing the same records.D
Dashboard The first screen after login, and the short list of today's numbers and waiting decisions it should carry instead of thirty charts nobody opens. Data Synchronisation The work of keeping the same numbers on every device, so a phone in a van, a second branch and the office all agree.J
Job Queue The waiting line where a system parks heavy work, like five hundred invoices, so the screens people use stay fast.K
Key Performance Indicator KPI One number you have chosen to watch because somebody can act on it, and the reason two reports can disagree about the very same week. KPI Dashboard KPI One screen with the five or six numbers an owner checks each morning to decide what to do that day.M
Multi-Branch Management One system across several branches, with a shared price list, stock and takings kept per branch, and one page the owner reads each evening.O
Offline Mode What a system keeps doing when the internet drops in the middle of a sale, what it cannot do, and the sync problems that show up afterwards.P
Progressive Web App PWA A web application staff can add to a phone home screen and open like an app, with no app store, no download and no update to install. Push Notifications A short message that appears on a phone or a browser without the person opening your app, and only if they gave permission.S
Scalability Why a system that feels quick for five people crawls for a hundred, what actually causes it, and why it costs far less to plan for at the start. Single Sign-On SSO One username and one password that open every system a member of staff is allowed to use, on the computer and on the phone.T
Total Cost of Ownership TCO What a system costs over five years once hosting, support, changes, training and card fees are added to the build price.U
User Acceptance Testing UAT The buyer's own check of a new system before signing it off, done on the real machines with a handful of ordinary working days. User Roles and Permissions How a system decides who may do what, why a receptionist can book an appointment without seeing the price, and what sharing the manager login really costs.V
Vendor Lock-In What happens to your code, your data, your domain name and your hosting on the day you decide to change supplier. Vulnerability Scan An automatic check that looks through a website or an application for weaknesses already known to attackers, then lists what it found.W
Web App vs Website A website tells visitors things, while a web application does work for them with sign-ins, saved records and printing. Web Application A program you use in a browser that does work and remembers it, with accounts, saved records and reports, unlike a website that only tells you things.Z
Zero-Downtime Deployment Putting a new version of a system live while customers keep using it, with a quick way back to the old version if something goes wrong.Other subject areas
Web Development The terms that come up when we build or rebuild a website or a web application. 4 Cybersecurity How systems are attacked, and the words we use for defending them. 31 Hosting & Infrastructure Where software actually runs, and what the numbers in a hosting contract mean. 2 SEO & Marketing The vocabulary of being found — search, content and measurement. 30 Programming Languages The languages software is written in, and what each one is genuinely good at. 8 Frameworks & Platforms The toolkits built on top of a language so teams do not rewrite the same foundations every time. 0 Databases & Data Where your records actually live, and why the choice changes what the system can do. 0 Cloud & Operations How software gets shipped, run and kept alive after it is written. 0 AI & Automation What the machines are actually doing when a product says it uses AI. 0 Design & User Experience How a screen is laid out, and why some sites feel easy while others feel confusing. 0 Mobile Apps The words you meet when you build an app for a phone and put it in a store. 28 Digital Marketing Paid ads, email, offers and the numbers that tell you whether any of it worked. 0 Social Media Posts, followers, reach and the everyday words of running an account well. 0 E-commerce Systems Selling online: the cart, the checkout, the stock and everything after the order. 0 Shops & Point of Sale The counter, the barcode, the till and the stock room of a real shop. 1 Maintenance Centres Repair jobs, spare parts, warranty and getting a device back to its owner. 0 School & University Systems Students, classes, attendance, marks and fees — the software a school runs on. 0 Hospital Management Beds, admissions, departments and the file that follows a patient through a hospital. 0 Clinic Management Appointments, visits, prescriptions and payments in a small medical practice. 0 Medical Laboratories Samples, tests, reference ranges and how a result reaches the person who ordered it. 0 Radiology Centres Scans, images, reports and the systems that store and share them safely. 0 Property & Rentals Units, tenants, contracts and rent — the paperwork of property, done in software. 0 Property Developers Projects, phases, instalment plans and selling a unit that is not built yet. 0 Salons & Spas Bookings, chairs, staff commission and keeping regulars coming back. 0 Gyms & Fitness Memberships, check-ins, classes and trainers — how a gym keeps track of everyone. 0 Custom Software Building a system around how a business actually works, instead of changing the business to fit a product. 0 Integrations & APIs Making two systems talk to each other, so the same number does not get typed twice. 0 Payments & Billing Taking money online, sending invoices and knowing exactly who has paid and who has not. 0 ERP & Accounting One set of books behind every department, so the numbers agree at the end of the month. 0 Software Projects How a software project is scoped, priced, built and handed over — and where they usually go wrong. 0 CRM & Customer Support Keeping track of who your customers are, what they asked for, and what you promised them. 0