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CHAPTER 3 : IT ARCHITECTURE - Coggle Diagram
CHAPTER 3 : IT ARCHITECTURE
CORPORATE IT ARCHITECTURE: THE BIG PICTURE
Describes how they fit together
What they do, how they interact
Firmwide organizing logic of the 3 classes of IT assets
Enterprise IT architecture
How corporate IT apps and infrastructure organized
Apps
Data
IT infrastructure
LAYER #1: IT INFRASTRUCTURE ARCHITECTURE
Firmwide digital plumbing used by all line functions and apps
IT infrastructure architecture is their firmwide arrangement
Relatively stable, generic commodity, and rarely a competitive differentiator
Consumes over 50% of corporate IT budgets
Must be reliable but economical
Key choice: level of centralization
Non-IT contributions
is frugality or tailoring more important for their units?
define good enough operational performance?
LAYER #2: APP ARCHITECTURE
App architecture
choosing where to locate the three pieces
arranging pieces on chessboard
has irreversible operational and strategic consequences
LAYER #3: DATA ARCHITECTURE
Integrated firmwide data is the foundation for automation and analytics
Widespread problem
Proliferation of duplicated, inconsistent data
Two causes
Fragmented across apps ( app architecture is for individual apps)
all apps collectively determine how a firm's data assets are organized and where they are located
data warehouse assemble copies of data to integrate siloed data
library of Congress for books
Geographic dispersion
to pick appropriate data architectures ,non-IT managers must decide
what data should be centralized firmwide for executing your core business processes or for analytics?
what data must be shared across ypur markets?