I min sidste artikel^{(last article)} forsøgte jeg kort at introducere dig til konceptet Cloud og Cloud computing Lad os nu forstå, hvad er typerne af skyer^(Clouds) . Vi har grundlæggende tre typer skyer^(Clouds) , nemlig offentlige skyer^{(Public Clouds)} , private skyer^{(Private Clouds)} og hybridskyer^{(Hybrid Clouds)} .

Typer af cloud computing

1] Offentlige skyer

Dette er de skyer, der er åbne for brug af den brede offentlighed, og de eksisterer uden for en organisations firewall, fuldt hostet og administreret af leverandører som Google , Amazon , Microsoft osv. De følger strengt " Pay as you go"-modellen, som hjælper startups med at starte småt og blive store uden at investere meget i it-infrastrukturen.

Her har en bruger ikke kontrol over styringen af ressourcerne. Alt administreres af tredjeparten, og det er deres ansvar at anvende softwareopdateringer, sikkerhedsrettelser osv.

Selvom de er ret effektive og letter en organisations indsats, da alt allerede er der, møder den en del kritik, især på sikkerhedsrelaterede spørgsmål.

2] Private Skyer

Det er de typer skyer, der findes inden for grænserne (firewall) af en organisation. Det er fuldstændigt styret af en virksomhed og har alle funktionerne i Public Clouds med en stor forskel, at det skal tage sig af den underliggende it-infrastruktur. De er mere sikre, da de er interne i en organisation, og de blander ressourcer efter deres forretningsbehov.

De er bedst egnede til de applikationer, der er relateret til stram sikkerhed og følger nogle strenge politikker eller er beregnet til reguleringsformål. Det er ikke særlig nemt for en organisation at gå med en privat cloud^{(Private Cloud)} på grund af dens kompleksitet og styring, så de bliver ofte brugt af virksomheder, der har foretaget store investeringer i deres it-infrastruktur og har arbejdskraft og evner til at styre den.

3] Hybride skyer

De består af eksterne og interne udbydere, nemlig en blanding af offentlige og private skyer. Sikre^(Secure) og kritiske apps administreres af en organisation og de ikke-så-kritiske og sikre apps af tredjepartsleverandøren. De har en unik identitet, bundet af standardteknologi, hvilket muliggør data- og applikationsportabilitet. De bruges i situationer som Cloud Bursting.

I de fleste lande kommer^(,) vi til at se mange investeringer i hybridskyerne^{(Hybrid Clouds)} i det næste årti af den simple grund, at mange virksomheder er skeptiske over for skyens sikkerhed^(Security) , og de foretrækker, at de kritiske data administreres af dem selv og ikke-kritiske data fra den eksterne udbyder.

Fra et slutbrugerperspektiv vil offentlige skyer^{(Public Clouds)} være mere interessante for dem, vi bruger alle offentlige skytjenester som Microsoft Office Web Apps , Google Docs osv.; hvorimod en virksomhed vil have en interesse i private og hybride skyer. Jeg vil foreslå, at de tjekker Microsoft Exchange online, Share Point online osv. for dette.

Types of Clouds Computing

In my last article, I tried to briefly introduce you to the concept of Cloud and Cloud computing Now let us understand, what are the types of Clouds. We basically have three types of Clouds, namely, Public Clouds, Private Clouds, and Hybrid Clouds.

1] Public Clouds

These are the clouds that are open for use by the general public and they exist beyond the firewall of an organization, fully hosted and managed by vendors like Google, Amazon, Microsoft, etc. They strictly follow the “Pay as you go” model which helps startups to start small and go big without investing much in the IT infrastructure.

Here a user does not have control over the management of the resources. Everything is managed by the third party and it’s their responsibility to apply software updates, security patches, etc.

Though they are quite effective and eases an organization’s effort since everything is already there, it does face some criticism, esp on security-related issues.

2] Private Clouds

These are the types of clouds that exist within the boundaries (firewall) of an organization. It is totally managed by an enterprise and has all the features of Public Clouds with a major difference that it has to take care of the underlying IT infrastructure. They are more secure as they are internal to an organization and they shuffle resources according to their business needs.

They are best suited for the applications which are related to tight security and follow some stringent policies or are meant for regulatory purposes. It is not very easy for an organization to go with a Private Cloud due to its complexity and management so they are often used by enterprises who have made huge investments in their IT infrastructure and have the manpower and abilities to manage it.

3] Hybrid Clouds

They consist of external and internal providers, viz a mix of public and private clouds. Secure & critical apps are managed by an organization and the not-so-critical & secure apps by the third-party vendor. They have a unique identity, bound by standard technology, thus enabling data and application portability. They are used in situations like Cloud Bursting.

In most countries, we are going to see a lot of investment in the Hybrid Clouds in the next decade, for the simple reason, that lot of companies are skeptical about the Cloud’s Security and they prefer that the critical data be managed by themselves and the non-critical data by the external provider.

From an end-user perspective, Public Clouds will be more interesting for them, we all use public cloud services like Microsoft Office Web Apps, Google Docs, etc; whereas an enterprise will be having an interest in private & hybrid clouds. I will suggest they check Microsoft Exchange online, Share Point online, etc for this.

Malthe Meldgaard

About the author

Efter næsten 20 år i teknologibranchen har jeg lært meget om Apple-produkter, og hvordan man kan tilpasse dem til mine behov. Især ved jeg, hvordan jeg bruger iOS-platformen til at skabe brugerdefinerede udseender og interagere med mine brugere gennem applikationspræferencer. Denne oplevelse har givet mig værdifuld indsigt i, hvordan Apple designer sine produkter, og hvordan man bedst kan forbedre deres brugeroplevelse.

Typer af cloud computing

Typer af cloud computing

1] Offentlige skyer

2] Private Skyer

3] Hybride skyer

Types of Clouds Computing