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Data visualisation is the discipline of choosing the right chart type for the question at hand and designing it so the answer is immediately apparent without requiring the reader to analyse the underlying data. Most BI tools default to bar charts for everything. We take a more deliberate approach. Hellenic Technologies uses Metabase’s full visualisation library alongside custom question configurations to match each metric to its most appropriate visual representation. Our dashboards are designed to communicate, not just display. Visualisation types we use and when:
  • Time series line charts — Trend data over time: revenue, sessions, conversions, ad spend. We configure appropriate moving averages and goal lines so trend direction is immediately legible.
  • Bar and column charts — Categorical comparisons: channel performance, product category revenue, campaign CPA. Horizontal bar charts for longer category labels; sorted by value by default.
  • Funnel charts — Conversion funnel visualisation from awareness through to purchase, with step-by-step drop-off rates. Essential for e-commerce and lead generation performance analysis.
  • Cohort tables — Retention and LTV cohort matrices showing behaviour over time by acquisition period. Used for subscription, SaaS, and repeat-purchase e-commerce clients.
  • Geo maps — Regional performance maps for clients with multi-market operations in Greece or across Europe. Revenue, conversion rate, and CPA by region or country.
  • Pivot tables and scorecards — Summary views with conditional formatting for executive and operations dashboards where a single number or percentage needs to communicate status at a glance.
Custom Metabase questions: Beyond pre-built dashboards, we configure Metabase’s native question editor so your team can build their own ad-hoc queries without writing SQL. We design the data model and permissions so self-service analytics is possible without risk of exposing sensitive data or creating conflicting metric definitions.