Read the following articles to find more information about what was covered in this chapter:
- Cloud Spanner: https://cloud.google.com/spanner/docs/
- Cloud Spanner Pricing: https://cloud.google.com/spanner/pricing
- Bigtable: https://cloud.google.com/Bigtable/docs/
- Bigtable Pricing: https://cloud.google.com/Bigtable/pricing