analytics-dictionary / tool overview / data infrastructure

Amazon S3

Amazon S3 is AWS object storage, widely used as the foundation of data lakes.

Written by Reflective Data experts · updated Oct 5, 2026

It stores any type of file cheaply and durably. Data pipelines often land raw data in S3, and query engines read from it directly.

Good organisation, partitioning and access control keep a lake usable.

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Azure is Microsoft cloud platform, with data services such as Synapse, Data Lake Storage and Fabric.

Infrastructure as code defines cloud resources in version-controlled files, so environments are reproducible and reviewable.

A data warehouse is a central database designed for analysis, where data from many systems is…

A data catalog is an organised inventory of your data assets, with descriptions, owners and lineage.

ETL is a process that extracts data from sources, transforms it, and then loads it into…

Fivetran is a managed ELT service with connectors for many SaaS tools and databases.