Taken from websages blog.
== Rules ==
– There is one system, not a collection of systems.
– The desired state of the system should be a known quantity.
– The “known quantity” must be machine parseable.
– The actual state of the system must self-correct to the desired state.
– The only authoritative source for the actual state of the system is the system.
– The entire system must be deployable using source media and text files.
On Buying Software
– Keep the components in the infrastructure simple so it will be better understood.
– All products must authenticate and authorize from external, configurable sources.
– Use small tools that interoperate well, not one “do everything poorly” product.
– Do not implement any product that no one in your organization has administered.
– “Administered” does not mean saw it in a rigged demo, online or otherwise.
– If you must deploy the product, hire someone who has implemented it before to do so.
– Do not author any code you would not buy.
– Do not implement any product that does not provide an API.
– The provided API must have all functionality that the application provides.
– The provided API must be tailored to more than one language and platform.
– Source code counts as an API, and may be restricted to one language or platform.
– The API must include functional examples and not requre someone to be an expert on the product to use.
– Do not use any product with configurations that are not machine parseable and machine writeable.
– All data stored in the product must be machine readable and writeable by applications other than the product itself.
– Writing hacks around the deficiencies in a product should be less work than writing the product’s functionality.
– Keep the disparity in your architecture to an absolute minimum.
– Use Set Theory to accomplish this.
– Do not improve manual processes if you can automate them instead.
– Do not buy software that requires bare-metal.
– Manual data transfers and datastores maintained manually are to be avoided.