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Thanks for the response guys, the company is quite large 1000+ people so in this case I will have to ask the service desk team about the most commonly occurring incidents.
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Thanks for the response guys, the company is quite large 1000+ people so in this case I will have to ask the service desk team about the most commonly occurring incidents.

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have your area of responsibility been clearly defined. I.e. You are responsible for this, that and the applications that are relying on these systems...
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have your area of responsibility been clearly defined. I.e. You are responsible for this, that and the applications that are relying on these systems...

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Thanks all for the suggestions !<br />
It's all make sense.
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Thanks all for the suggestions !
It's all make sense.

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You are very welcome and I was happy to help you with this.
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You are very welcome and I was happy to help you with this.

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People,<br />
<br />
What would be your suggestion as the task to do for the first 90 days as a System Administrator in the new company you joined ?<br />
<br />
Thanks in advance.
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People,

What would be your suggestion as the task to do for the first 90 days as a System Administrator in the new company you joined ?

Thanks in advance.

Suggestion for the first 90 days as sysadmin in new company ?

IT Administration is the processes and best practices for programming and development, and incorporates methodologies for managing activities and projects. Common methodologies include waterfall, prototyping, iterative and incremental development, spiral development, rapid application development, extreme programming and various types of agile methodology. The life-cycle "model" is a more general term for a category of methodologies, and a software development "process" a more specific term to refer to a specific process chosen by a specific organization.

IT Administration

Security is the protection of information systems from theft or damage to the hardware, the software, and the information on them, as well as from disruption or misdirection of the services they provide. The main goal of security is protecting assets, and an asset is anything of value and worthy of protection.  Information Security is a discipline of protecting information assets from threats through safeguards to achieve the objectives of confidentiality, integrity, and availability or CIA for short. On the other hand, disclosure, alteration, and disruption (DAD) compromise the security objectives.

Security

Operating system security (OS security) is the process of ensuring OS integrity, confidentiality and availability. OS security refers to specified steps or measures used to protect the OS from threats, viruses, worms, malware or remote hacker intrusions. OS security encompasses all preventive-control techniques, which safeguard any computer assets capable of being stolen, edited or deleted if OS security is compromised, including authentication, passwords and threats to systems and programs.

OS Security

Microsoft 365 Enterprise E5 is the most feature-rich version of Microsoft 365 and consists of Office 365, Windows 10, and Enterprise Mobility + Security (EMS). It provides the collaboration, productivity, automation, and security features an enterprise customer may need to support its digital business transformation initiatives in a single stock keeping unit (SKU),
which streamlines its deployment and utilization. For companies that do not need the full feature set, Microsoft offers different versions, such as the E3 SKU at a lower price point and F1 for firstline workers.

Microsoft 365 Enterprise

Enterprise software, also known as enterprise application software (EAS), is computer software used to satisfy the needs of an organization, including businesses, schools, interest-based user groups, clubs, charities, or governments. Services provided by enterprise software are typically business-oriented tools such as online shopping and online payment processing, interactive product catalogue, automated billing systems, security, enterprise content management, IT service management, customer relationship management (CRM), enterprise resource planning (ERP), business intelligence (BI), project management, human resource management (HR), manufacturing and supply chain management, enterprise application integration (EAI), and enterprise forms automation. Enterprise software is often available as a suite of customizable programs that require specialist capabilities.