Cells are basically subsets or shards of customer resources with infrastructure isolated from other cells. The reference deployment pipeline in the blog post [0] would deploy to each cell individually in different waves depending on how your team configures the waves ultimately limiting the blast radius of a deployment to a smaller subset of customers.
I like having groups of customers segmented into copies of your architecture. It means you know how to spin that up independently which is good for a lot of reasons.
And a talk on what a cell based architecture is here: https://youtube.com/watch?v=HUwz8uko7HY
Cells are basically subsets or shards of customer resources with infrastructure isolated from other cells. The reference deployment pipeline in the blog post [0] would deploy to each cell individually in different waves depending on how your team configures the waves ultimately limiting the blast radius of a deployment to a smaller subset of customers.
[0]: https://aws.amazon.com/blogs/aws/new_deployment_pipelines_re...