Episode 29: Why You Need a Modern Data Warehouse

In this episode Andrew and Danny talk about modern data warehouses – what they are, how they differ from old-fashioned data warehouses, and why you might want one.

What is a modern data warehouse?

  • A modern data warehouse is a database and analytics technology that helps you process big data using all the scale of the cloud.
  • We are talking about products such as Azure Synapse Analytics and Snowflake.

How do they differ from older generations of data warehouses?

  • Older generations of data warehouse were built on relational database technology, and therefore constrained by the performance of individual machines.
  • A next generation introduced MPP – Massively Parallel Processing – which gave scale to data warehouses.
  • Modern data warehouses separate compute from storage.  Compute is the expensive part, storage is cheap (relatively).  You can scale compute up and down as demand requires, whilst benefitting from massive-scale cloud storage.
  • Modern cloud data warehouses are as much a system for managing cloud resources as they are a single product.

Why you might want a modern data warehouse?

  • Increasingly, we see companies adopting SaaS products for major line of business systems.
  • This is great for many businesses – lower operating and support costs, functionality develops over time, can get industry-specific solutions that fit with their businesses.
  • Downside is that this creates data silos – isolated pockets of data within the SaaS apps.  
  • You need to own your own data, don’t rent it.  Build a data warehouse and ingest the data from your SaaS apps so that you have a single view of the data your organisation relies on.
  • This single view of data allows you to combine and crunch datasets together, which is simply not possible when your data lives in separate SaaS apps.

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