| A/B testing |
A/B testing is a user experience research method where two versions (A and B)
are shown simultaneously to different audience segments in order to determine which performs
better in relation to a specific goal. Then, it is statistically measured which version
delivered the best results, so that decisions are based on data rather than assumptions.
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| API (Application Programming Interface) |
A communication bridge that allows two different software systems to “talk” to each other
and exchange data in an organized and secure way.
E.g. a weather app calls an API to receive measurements from an external server.
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| Back-end |
The “invisible” part of an application: server, database, and business logic that
processes data, manages users, and performs calculations. When you press a
button on the Front-end, the Back-end executes the command and returns the result.
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| CRO (Conversion Rate Optimization) |
A systematic process of increasing the percentage of visitors who complete desired
actions (purchase, sign-up, form submission). Through behavior analysis, UX improvements
and tests (e.g. A/B), it makes the website more effective and maximizes the return
from existing traffic.
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| ELΟT 1435 |
A Greek Quality Standard for companies providing Communication Services (advertising,
PR, digital agencies). For the client, it serves as a guarantee of standardized, controlled,
and high-quality procedures throughout the entire collaboration cycle: from proposal and project
management to delivery and support.
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| Front-end |
The visible part of a website/application with which the user interacts: buttons,
menus, text, forms, etc. It is implemented with HTML, CSS, and JavaScript, “bringing”
the design (UI/UX) to life into an attractive and functional experience.
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| KPI (Key Performance Indicator) |
A measurable indicator for tracking progress toward a larger goal.
It is not the goal itself but a “checkpoint.” Example: if the goal is
“increase online sales,” a KPI could be “+15% monthly traffic.”
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| Leads |
Individuals or organizations that have shown interest in products/services (e.g. form, sign-up,
inquiry). They are potential customers for further nurturing and conversion
into actual customers.
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| ROI (Return on Investment) |
A measurement of the profitability of an investment: it compares profit with cost. Example:
ROI 500% means a net profit of €5 for every €1 of cost (total return of €6).
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| Scalability |
The ability of an application/system to handle increasing load (more users,
data) while remaining fast and stable, without being redesigned from scratch.
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| SEO (Search Engine Optimization) |
The practice of optimizing a website for higher visibility in the organic results
of search engines (e.g. Google), when relevant keywords are searched.
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| Sprint |
In Agile project management, a short, defined period of time (usually 1–4 weeks)
during which the team commits to completing a specific set of tasks.
It provides flexibility, progress control, and regular feedback.
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| Ticketing System |
An organized system for recording, managing, and monitoring support requests.
Each request becomes a unique “ticket” with an action history until final resolution.
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| User interface (UI) |
The “User Interface”: the visual elements with which you interact (buttons, colors,
fonts, images, layout). The goal is an aesthetically pleasing environment that
guides the user and makes navigation easier.
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| User journey |
The user’s path from the first touchpoint (e.g. advertisement) to the completion of the
desired action (e.g. purchase). Mapping it reveals obstacles and
opportunities for improvement.
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| UX (User Experience) |
The overall experience a person has when interacting with a product/system/service.
It is achieved through user-centered design, research, usability testing,
and continuous improvement.
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| Wireframe / Mockup |
The “architectural plans” of a website/application before code. The wireframe is
a black-and-white layout skeleton. The mockup adds colors, fonts, and images
for a more realistic preview.
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