The Information Systems Strategy Framework and the Classification of Information Systems
低頻~28 min4 terms10 past questions
Goals of this unit
Explain that an information system strategy is based on the business strategy and sets the target state and optimization policy for the organization's information systems as a whole.
Explain, step by step, that EA is a method that compares the current state with the target state to optimize the whole organization.
Tell apart enterprise search, a mechanism for finding internal information in one place, from EA, which is an optimization method.
Distinguish SoR from SoE by purpose: keeping records accurate versus deepening relationships with customers.
EA (enterprise architecture, エンタープライズアーキテクチャ) is a method that maps the current and target states of an organization's business processes and information systems, then closes the gap between them to achieve whole-organization optimization.
Understand the current state
Define the target state
Identify the gap
Draw up a migration plan
Organize the improvement steps that close the gap into a migration plan.
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An information system strategy (情報システム戦略) follows the business strategy (経営戦略) to set the target state and optimization policy for all information systems, and EA is the framework used to describe that target and bring the whole into shape. When each department builds its own systems, functions tend to be duplicated and data tends to conflict, so EA treats the entire organization as one structure. Comparing the current state (As-Is) with the target state (To-Be) to find the differences is called gap analysis (ギャップ分析), and the improvement steps that close those differences go into a migration plan (移行計画).
AnalogyIt is like planning a whole-house renovation. Instead of fixing rooms one by one on a whim, you draw the current floor plan, sketch the ideal one, and decide the order of work from the differences.
How to rememberEnterprise means the whole company, and architecture means the design of a building: together, a blueprint for the entire company.
Exam points
ExamEA captures the current state of an organization's business and systems, sets a target state, and aims for whole-organization optimization (全体最適) rather than optimizing individual parts.
ExamIn EA, the analysis that clarifies the difference between the current and target states is gap analysis (ギャップ分析), and the improvement work that closes it is set out in a migration plan (移行計画).
ExamAn information system strategy (情報システム戦略) is built on the business strategy (経営戦略) and sets the target state and optimization policy for all information systems.
Enterprise search (エンタープライズサーチ) is a mechanism that lets people search across information stored in many separate internal systems from a single entry point.
Its targets include not only structured data (定型データ) arranged in tables but also unstructured data (非定型データ) with no fixed format, such as documents and email. Many search engines use software called a crawler (クローラ) to visit and collect documents automatically and build an index in advance so they are easy to find.
AnalogyIt is like a library catalog terminal that tells you where any book is, whichever shelf or stack room it sits in.
How to rememberEnterprise plus search: think of it as a search engine for inside the company.
Exam points
ExamThe targets of enterprise search (エンタープライズサーチ) are the data held in a company's various systems, covering both structured and unstructured data.
ExamIn a full-text search engine, the software that automatically visits and gathers documents to feed the search index is a crawler (クローラ).
Mix-upEnterprise search is a mechanism for finding internal information, while EA is a method for optimizing business processes and systems toward a target state. They share the word enterprise, but their roles are different.
SoR (System of Record) is a view of systems that keeps an organization's official records, such as transactions and customer data, free of errors and puts reliability and stable operation first.
Core systems that handle official records, such as sales management, inventory management, and payroll, fall into this group. Because a data error or an outage affects the whole business, changes are made on a schedule after thorough testing.
AnalogyIt is like the entries in a bank passbook. They look plain, but what matters most is keeping every record correct down to the last cent.
How to rememberRecord as in keeping the books: the system that does the bookkeeping.
Exam points
ExamSoR refers to systems that are strongly required to keep a company's important records accurate and to keep running without stopping.
SoE (System of Engagement) is a view of systems aimed at deepening ties with customers and users, with an emphasis on changing content and features quickly.
Systems that deal directly with users, such as customer smartphone apps and membership websites, fall into this group. They need to update the information, screens, and features they offer in short cycles as customer reactions and the market change.
AnalogyIt is like a shop assistant who reads each customer's reaction, adjusts how they talk and show products on the spot, and aims to make people want to come back.
How to rememberEngagement as in engaging with people: the system that faces the customer.
Exam points
ExamSoE refers to systems that focus on building a relationship with each customer and refresh the information they handle at short intervals.
SoR (System of Record) vs. SoE (System of Engagement)
Aspect
SoR (System of Record)
SoE (System of Engagement)
Key differencePurpose
Keep the organization's official records error-free
Deepen ties with customers and users
Key differenceKey quality
Reliability and stable operation
Ability to change quickly as conditions shift
How changes are made
Planned changes after thorough testing
Rebuilt in short cycles
Examples
Sales management, inventory management, payroll
Customer apps, membership websites
Key points
The purpose of an information system strategy is to set a direction that optimizes the organization's information systems as a whole while staying aligned with the business strategy.
EA pursues whole-organization optimization in this order: understand the current state, set the target state, clarify the gap through gap analysis, and draw up a migration plan.
Enterprise search is a mechanism that makes structured and unstructured data scattered across the company searchable from one place.